WordPress 3.8.1
[autoinstalls/wordpress.git] / wp-includes / query.php
1 <?php
2 /**
3  * WordPress Query API
4  *
5  * The query API attempts to get which part of WordPress the user is on. It
6  * also provides functionality for getting URL query information.
7  *
8  * @link http://codex.wordpress.org/The_Loop More information on The Loop.
9  *
10  * @package WordPress
11  * @subpackage Query
12  */
13
14 /**
15  * Retrieve variable in the WP_Query class.
16  *
17  * @see WP_Query::get()
18  * @since 1.5.0
19  * @uses $wp_query
20  *
21  * @param string $var The variable key to retrieve.
22  * @return mixed
23  */
24 function get_query_var($var) {
25         global $wp_query;
26
27         return $wp_query->get($var);
28 }
29
30 /**
31  * Retrieve the currently-queried object. Wrapper for $wp_query->get_queried_object()
32  *
33  * @uses WP_Query::get_queried_object
34  *
35  * @since 3.1.0
36  * @access public
37  *
38  * @return object
39  */
40 function get_queried_object() {
41         global $wp_query;
42         return $wp_query->get_queried_object();
43 }
44
45 /**
46  * Retrieve ID of the current queried object. Wrapper for $wp_query->get_queried_object_id()
47  *
48  * @uses WP_Query::get_queried_object_id()
49  *
50  * @since 3.1.0
51  * @access public
52  *
53  * @return int
54  */
55 function get_queried_object_id() {
56         global $wp_query;
57         return $wp_query->get_queried_object_id();
58 }
59
60 /**
61  * Set query variable.
62  *
63  * @see WP_Query::set()
64  * @since 2.2.0
65  * @uses $wp_query
66  *
67  * @param string $var Query variable key.
68  * @param mixed $value
69  * @return null
70  */
71 function set_query_var($var, $value) {
72         global $wp_query;
73
74         return $wp_query->set($var, $value);
75 }
76
77 /**
78  * Set up The Loop with query parameters.
79  *
80  * This will override the current WordPress Loop and shouldn't be used more than
81  * once. This must not be used within the WordPress Loop.
82  *
83  * @since 1.5.0
84  * @uses $wp_query
85  *
86  * @param string $query
87  * @return array List of posts
88  */
89 function query_posts($query) {
90         $GLOBALS['wp_query'] = new WP_Query();
91         return $GLOBALS['wp_query']->query($query);
92 }
93
94 /**
95  * Destroy the previous query and set up a new query.
96  *
97  * This should be used after {@link query_posts()} and before another {@link
98  * query_posts()}. This will remove obscure bugs that occur when the previous
99  * wp_query object is not destroyed properly before another is set up.
100  *
101  * @since 2.3.0
102  * @uses $wp_query
103  */
104 function wp_reset_query() {
105         $GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];
106         wp_reset_postdata();
107 }
108
109 /**
110  * After looping through a separate query, this function restores
111  * the $post global to the current post in the main query.
112  *
113  * @since 3.0.0
114  * @uses $wp_query
115  */
116 function wp_reset_postdata() {
117         global $wp_query;
118
119         if ( isset( $wp_query ) ) {
120                 $wp_query->reset_postdata();
121         }
122 }
123
124 /*
125  * Query type checks.
126  */
127
128 /**
129  * Is the query for an existing archive page?
130  *
131  * Month, Year, Category, Author, Post Type archive...
132  *
133  * @see WP_Query::is_archive()
134  * @since 1.5.0
135  * @uses $wp_query
136  *
137  * @return bool
138  */
139 function is_archive() {
140         global $wp_query;
141
142         if ( ! isset( $wp_query ) ) {
143                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
144                 return false;
145         }
146
147         return $wp_query->is_archive();
148 }
149
150 /**
151  * Is the query for an existing post type archive page?
152  *
153  * @see WP_Query::is_post_type_archive()
154  * @since 3.1.0
155  * @uses $wp_query
156  *
157  * @param mixed $post_types Optional. Post type or array of posts types to check against.
158  * @return bool
159  */
160 function is_post_type_archive( $post_types = '' ) {
161         global $wp_query;
162
163         if ( ! isset( $wp_query ) ) {
164                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
165                 return false;
166         }
167
168         return $wp_query->is_post_type_archive( $post_types );
169 }
170
171 /**
172  * Is the query for an existing attachment page?
173  *
174  * @see WP_Query::is_attachment()
175  * @since 2.0.0
176  * @uses $wp_query
177  *
178  * @return bool
179  */
180 function is_attachment() {
181         global $wp_query;
182
183         if ( ! isset( $wp_query ) ) {
184                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
185                 return false;
186         }
187
188         return $wp_query->is_attachment();
189 }
190
191 /**
192  * Is the query for an existing author archive page?
193  *
194  * If the $author parameter is specified, this function will additionally
195  * check if the query is for one of the authors specified.
196  *
197  * @see WP_Query::is_author()
198  * @since 1.5.0
199  * @uses $wp_query
200  *
201  * @param mixed $author Optional. User ID, nickname, nicename, or array of User IDs, nicknames, and nicenames
202  * @return bool
203  */
204 function is_author( $author = '' ) {
205         global $wp_query;
206
207         if ( ! isset( $wp_query ) ) {
208                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
209                 return false;
210         }
211
212         return $wp_query->is_author( $author );
213 }
214
215 /**
216  * Is the query for an existing category archive page?
217  *
218  * If the $category parameter is specified, this function will additionally
219  * check if the query is for one of the categories specified.
220  *
221  * @see WP_Query::is_category()
222  * @since 1.5.0
223  * @uses $wp_query
224  *
225  * @param mixed $category Optional. Category ID, name, slug, or array of Category IDs, names, and slugs.
226  * @return bool
227  */
228 function is_category( $category = '' ) {
229         global $wp_query;
230
231         if ( ! isset( $wp_query ) ) {
232                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
233                 return false;
234         }
235
236         return $wp_query->is_category( $category );
237 }
238
239 /**
240  * Is the query for an existing tag archive page?
241  *
242  * If the $tag parameter is specified, this function will additionally
243  * check if the query is for one of the tags specified.
244  *
245  * @see WP_Query::is_tag()
246  * @since 2.3.0
247  * @uses $wp_query
248  *
249  * @param mixed $tag Optional. Tag ID, name, slug, or array of Tag IDs, names, and slugs.
250  * @return bool
251  */
252 function is_tag( $tag = '' ) {
253         global $wp_query;
254
255         if ( ! isset( $wp_query ) ) {
256                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
257                 return false;
258         }
259
260         return $wp_query->is_tag( $tag );
261 }
262
263 /**
264  * Is the query for an existing taxonomy archive page?
265  *
266  * If the $taxonomy parameter is specified, this function will additionally
267  * check if the query is for that specific $taxonomy.
268  *
269  * If the $term parameter is specified in addition to the $taxonomy parameter,
270  * this function will additionally check if the query is for one of the terms
271  * specified.
272  *
273  * @see WP_Query::is_tax()
274  * @since 2.5.0
275  * @uses $wp_query
276  *
277  * @param mixed $taxonomy Optional. Taxonomy slug or slugs.
278  * @param mixed $term Optional. Term ID, name, slug or array of Term IDs, names, and slugs.
279  * @return bool
280  */
281 function is_tax( $taxonomy = '', $term = '' ) {
282         global $wp_query;
283
284         if ( ! isset( $wp_query ) ) {
285                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
286                 return false;
287         }
288
289         return $wp_query->is_tax( $taxonomy, $term );
290 }
291
292 /**
293  * Whether the current URL is within the comments popup window.
294  *
295  * @see WP_Query::is_comments_popup()
296  * @since 1.5.0
297  * @uses $wp_query
298  *
299  * @return bool
300  */
301 function is_comments_popup() {
302         global $wp_query;
303
304         if ( ! isset( $wp_query ) ) {
305                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
306                 return false;
307         }
308
309         return $wp_query->is_comments_popup();
310 }
311
312 /**
313  * Is the query for an existing date archive?
314  *
315  * @see WP_Query::is_date()
316  * @since 1.5.0
317  * @uses $wp_query
318  *
319  * @return bool
320  */
321 function is_date() {
322         global $wp_query;
323
324         if ( ! isset( $wp_query ) ) {
325                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
326                 return false;
327         }
328
329         return $wp_query->is_date();
330 }
331
332 /**
333  * Is the query for an existing day archive?
334  *
335  * @see WP_Query::is_day()
336  * @since 1.5.0
337  * @uses $wp_query
338  *
339  * @return bool
340  */
341 function is_day() {
342         global $wp_query;
343
344         if ( ! isset( $wp_query ) ) {
345                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
346                 return false;
347         }
348
349         return $wp_query->is_day();
350 }
351
352 /**
353  * Is the query for a feed?
354  *
355  * @see WP_Query::is_feed()
356  * @since 1.5.0
357  * @uses $wp_query
358  *
359  * @param string|array $feeds Optional feed types to check.
360  * @return bool
361  */
362 function is_feed( $feeds = '' ) {
363         global $wp_query;
364
365         if ( ! isset( $wp_query ) ) {
366                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
367                 return false;
368         }
369
370         return $wp_query->is_feed( $feeds );
371 }
372
373 /**
374  * Is the query for a comments feed?
375  *
376  * @see WP_Query::is_comments_feed()
377  * @since 3.0.0
378  * @uses $wp_query
379  *
380  * @return bool
381  */
382 function is_comment_feed() {
383         global $wp_query;
384
385         if ( ! isset( $wp_query ) ) {
386                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
387                 return false;
388         }
389
390         return $wp_query->is_comment_feed();
391 }
392
393 /**
394  * Is the query for the front page of the site?
395  *
396  * This is for what is displayed at your site's main URL.
397  *
398  * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_on_front'.
399  *
400  * If you set a static page for the front page of your site, this function will return
401  * true when viewing that page.
402  *
403  * Otherwise the same as @see is_home()
404  *
405  * @see WP_Query::is_front_page()
406  * @since 2.5.0
407  * @uses is_home()
408  * @uses get_option()
409  *
410  * @return bool True, if front of site.
411  */
412 function is_front_page() {
413         global $wp_query;
414
415         if ( ! isset( $wp_query ) ) {
416                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
417                 return false;
418         }
419
420         return $wp_query->is_front_page();
421 }
422
423 /**
424  * Is the query for the blog homepage?
425  *
426  * This is the page which shows the time based blog content of your site.
427  *
428  * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_for_posts'.
429  *
430  * If you set a static page for the front page of your site, this function will return
431  * true only on the page you set as the "Posts page".
432  *
433  * @see is_front_page()
434  *
435  * @see WP_Query::is_home()
436  * @since 1.5.0
437  * @uses $wp_query
438  *
439  * @return bool True if blog view homepage.
440  */
441 function is_home() {
442         global $wp_query;
443
444         if ( ! isset( $wp_query ) ) {
445                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
446                 return false;
447         }
448
449         return $wp_query->is_home();
450 }
451
452 /**
453  * Is the query for an existing month archive?
454  *
455  * @see WP_Query::is_month()
456  * @since 1.5.0
457  * @uses $wp_query
458  *
459  * @return bool
460  */
461 function is_month() {
462         global $wp_query;
463
464         if ( ! isset( $wp_query ) ) {
465                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
466                 return false;
467         }
468
469         return $wp_query->is_month();
470 }
471
472 /**
473  * Is the query for an existing single page?
474  *
475  * If the $page parameter is specified, this function will additionally
476  * check if the query is for one of the pages specified.
477  *
478  * @see is_single()
479  * @see is_singular()
480  *
481  * @see WP_Query::is_page()
482  * @since 1.5.0
483  * @uses $wp_query
484  *
485  * @param mixed $page Page ID, title, slug, or array of such.
486  * @return bool
487  */
488 function is_page( $page = '' ) {
489         global $wp_query;
490
491         if ( ! isset( $wp_query ) ) {
492                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
493                 return false;
494         }
495
496         return $wp_query->is_page( $page );
497 }
498
499 /**
500  * Is the query for paged result and not for the first page?
501  *
502  * @see WP_Query::is_paged()
503  * @since 1.5.0
504  * @uses $wp_query
505  *
506  * @return bool
507  */
508 function is_paged() {
509         global $wp_query;
510
511         if ( ! isset( $wp_query ) ) {
512                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
513                 return false;
514         }
515
516         return $wp_query->is_paged();
517 }
518
519 /**
520  * Is the query for a post or page preview?
521  *
522  * @see WP_Query::is_preview()
523  * @since 2.0.0
524  * @uses $wp_query
525  *
526  * @return bool
527  */
528 function is_preview() {
529         global $wp_query;
530
531         if ( ! isset( $wp_query ) ) {
532                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
533                 return false;
534         }
535
536         return $wp_query->is_preview();
537 }
538
539 /**
540  * Is the query for the robots file?
541  *
542  * @see WP_Query::is_robots()
543  * @since 2.1.0
544  * @uses $wp_query
545  *
546  * @return bool
547  */
548 function is_robots() {
549         global $wp_query;
550
551         if ( ! isset( $wp_query ) ) {
552                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
553                 return false;
554         }
555
556         return $wp_query->is_robots();
557 }
558
559 /**
560  * Is the query for a search?
561  *
562  * @see WP_Query::is_search()
563  * @since 1.5.0
564  * @uses $wp_query
565  *
566  * @return bool
567  */
568 function is_search() {
569         global $wp_query;
570
571         if ( ! isset( $wp_query ) ) {
572                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
573                 return false;
574         }
575
576         return $wp_query->is_search();
577 }
578
579 /**
580  * Is the query for an existing single post?
581  *
582  * Works for any post type, except attachments and pages
583  *
584  * If the $post parameter is specified, this function will additionally
585  * check if the query is for one of the Posts specified.
586  *
587  * @see is_page()
588  * @see is_singular()
589  *
590  * @see WP_Query::is_single()
591  * @since 1.5.0
592  * @uses $wp_query
593  *
594  * @param mixed $post Post ID, title, slug, or array of such.
595  * @return bool
596  */
597 function is_single( $post = '' ) {
598         global $wp_query;
599
600         if ( ! isset( $wp_query ) ) {
601                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
602                 return false;
603         }
604
605         return $wp_query->is_single( $post );
606 }
607
608 /**
609  * Is the query for an existing single post of any post type (post, attachment, page, ... )?
610  *
611  * If the $post_types parameter is specified, this function will additionally
612  * check if the query is for one of the Posts Types specified.
613  *
614  * @see is_page()
615  * @see is_single()
616  *
617  * @see WP_Query::is_singular()
618  * @since 1.5.0
619  * @uses $wp_query
620  *
621  * @param mixed $post_types Optional. Post Type or array of Post Types
622  * @return bool
623  */
624 function is_singular( $post_types = '' ) {
625         global $wp_query;
626
627         if ( ! isset( $wp_query ) ) {
628                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
629                 return false;
630         }
631
632         return $wp_query->is_singular( $post_types );
633 }
634
635 /**
636  * Is the query for a specific time?
637  *
638  * @see WP_Query::is_time()
639  * @since 1.5.0
640  * @uses $wp_query
641  *
642  * @return bool
643  */
644 function is_time() {
645         global $wp_query;
646
647         if ( ! isset( $wp_query ) ) {
648                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
649                 return false;
650         }
651
652         return $wp_query->is_time();
653 }
654
655 /**
656  * Is the query for a trackback endpoint call?
657  *
658  * @see WP_Query::is_trackback()
659  * @since 1.5.0
660  * @uses $wp_query
661  *
662  * @return bool
663  */
664 function is_trackback() {
665         global $wp_query;
666
667         if ( ! isset( $wp_query ) ) {
668                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
669                 return false;
670         }
671
672         return $wp_query->is_trackback();
673 }
674
675 /**
676  * Is the query for an existing year archive?
677  *
678  * @see WP_Query::is_year()
679  * @since 1.5.0
680  * @uses $wp_query
681  *
682  * @return bool
683  */
684 function is_year() {
685         global $wp_query;
686
687         if ( ! isset( $wp_query ) ) {
688                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
689                 return false;
690         }
691
692         return $wp_query->is_year();
693 }
694
695 /**
696  * Is the query a 404 (returns no results)?
697  *
698  * @see WP_Query::is_404()
699  * @since 1.5.0
700  * @uses $wp_query
701  *
702  * @return bool
703  */
704 function is_404() {
705         global $wp_query;
706
707         if ( ! isset( $wp_query ) ) {
708                 _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
709                 return false;
710         }
711
712         return $wp_query->is_404();
713 }
714
715 /**
716  * Is the query the main query?
717  *
718  * @since 3.3.0
719  *
720  * @return bool
721  */
722 function is_main_query() {
723         if ( 'pre_get_posts' === current_filter() ) {
724                 $message = sprintf( __( 'In <code>%1$s</code>, use the <code>%2$s</code> method, not the <code>%3$s</code> function. See %4$s.' ),
725                         'pre_get_posts', 'WP_Query::is_main_query()', 'is_main_query()', __( 'http://codex.wordpress.org/Function_Reference/is_main_query' ) );
726                 _doing_it_wrong( __FUNCTION__, $message, '3.7' );
727         }
728
729         global $wp_query;
730         return $wp_query->is_main_query();
731 }
732
733 /*
734  * The Loop. Post loop control.
735  */
736
737 /**
738  * Whether current WordPress query has results to loop over.
739  *
740  * @see WP_Query::have_posts()
741  * @since 1.5.0
742  * @uses $wp_query
743  *
744  * @return bool
745  */
746 function have_posts() {
747         global $wp_query;
748
749         return $wp_query->have_posts();
750 }
751
752 /**
753  * Whether the caller is in the Loop.
754  *
755  * @since 2.0.0
756  * @uses $wp_query
757  *
758  * @return bool True if caller is within loop, false if loop hasn't started or ended.
759  */
760 function in_the_loop() {
761         global $wp_query;
762
763         return $wp_query->in_the_loop;
764 }
765
766 /**
767  * Rewind the loop posts.
768  *
769  * @see WP_Query::rewind_posts()
770  * @since 1.5.0
771  * @uses $wp_query
772  *
773  * @return null
774  */
775 function rewind_posts() {
776         global $wp_query;
777
778         return $wp_query->rewind_posts();
779 }
780
781 /**
782  * Iterate the post index in the loop.
783  *
784  * @see WP_Query::the_post()
785  * @since 1.5.0
786  * @uses $wp_query
787  */
788 function the_post() {
789         global $wp_query;
790
791         $wp_query->the_post();
792 }
793
794 /*
795  * Comments loop.
796  */
797
798 /**
799  * Whether there are comments to loop over.
800  *
801  * @see WP_Query::have_comments()
802  * @since 2.2.0
803  * @uses $wp_query
804  *
805  * @return bool
806  */
807 function have_comments() {
808         global $wp_query;
809         return $wp_query->have_comments();
810 }
811
812 /**
813  * Iterate comment index in the comment loop.
814  *
815  * @see WP_Query::the_comment()
816  * @since 2.2.0
817  * @uses $wp_query
818  *
819  * @return object
820  */
821 function the_comment() {
822         global $wp_query;
823         return $wp_query->the_comment();
824 }
825
826 /*
827  * WP_Query
828  */
829
830 /**
831  * The WordPress Query class.
832  *
833  * @link http://codex.wordpress.org/Function_Reference/WP_Query Codex page.
834  *
835  * @since 1.5.0
836  */
837 class WP_Query {
838
839         /**
840          * Query vars set by the user
841          *
842          * @since 1.5.0
843          * @access public
844          * @var array
845          */
846         var $query;
847
848         /**
849          * Query vars, after parsing
850          *
851          * @since 1.5.0
852          * @access public
853          * @var array
854          */
855         var $query_vars = array();
856
857         /**
858          * Taxonomy query, as passed to get_tax_sql()
859          *
860          * @since 3.1.0
861          * @access public
862          * @var object WP_Tax_Query
863          */
864         var $tax_query;
865
866         /**
867          * Metadata query container
868          *
869          * @since 3.2.0
870          * @access public
871          * @var object WP_Meta_Query
872          */
873         var $meta_query = false;
874
875         /**
876          * Date query container
877          *
878          * @since 3.7.0
879          * @access public
880          * @var object WP_Date_Query
881          */
882         var $date_query = false;
883
884         /**
885          * Holds the data for a single object that is queried.
886          *
887          * Holds the contents of a post, page, category, attachment.
888          *
889          * @since 1.5.0
890          * @access public
891          * @var object|array
892          */
893         var $queried_object;
894
895         /**
896          * The ID of the queried object.
897          *
898          * @since 1.5.0
899          * @access public
900          * @var int
901          */
902         var $queried_object_id;
903
904         /**
905          * Get post database query.
906          *
907          * @since 2.0.1
908          * @access public
909          * @var string
910          */
911         var $request;
912
913         /**
914          * List of posts.
915          *
916          * @since 1.5.0
917          * @access public
918          * @var array
919          */
920         var $posts;
921
922         /**
923          * The amount of posts for the current query.
924          *
925          * @since 1.5.0
926          * @access public
927          * @var int
928          */
929         var $post_count = 0;
930
931         /**
932          * Index of the current item in the loop.
933          *
934          * @since 1.5.0
935          * @access public
936          * @var int
937          */
938         var $current_post = -1;
939
940         /**
941          * Whether the loop has started and the caller is in the loop.
942          *
943          * @since 2.0.0
944          * @access public
945          * @var bool
946          */
947         var $in_the_loop = false;
948
949         /**
950          * The current post.
951          *
952          * @since 1.5.0
953          * @access public
954          * @var WP_Post
955          */
956         var $post;
957
958         /**
959          * The list of comments for current post.
960          *
961          * @since 2.2.0
962          * @access public
963          * @var array
964          */
965         var $comments;
966
967         /**
968          * The amount of comments for the posts.
969          *
970          * @since 2.2.0
971          * @access public
972          * @var int
973          */
974         var $comment_count = 0;
975
976         /**
977          * The index of the comment in the comment loop.
978          *
979          * @since 2.2.0
980          * @access public
981          * @var int
982          */
983         var $current_comment = -1;
984
985         /**
986          * Current comment ID.
987          *
988          * @since 2.2.0
989          * @access public
990          * @var int
991          */
992         var $comment;
993
994         /**
995          * The amount of found posts for the current query.
996          *
997          * If limit clause was not used, equals $post_count.
998          *
999          * @since 2.1.0
1000          * @access public
1001          * @var int
1002          */
1003         var $found_posts = 0;
1004
1005         /**
1006          * The amount of pages.
1007          *
1008          * @since 2.1.0
1009          * @access public
1010          * @var int
1011          */
1012         var $max_num_pages = 0;
1013
1014         /**
1015          * The amount of comment pages.
1016          *
1017          * @since 2.7.0
1018          * @access public
1019          * @var int
1020          */
1021         var $max_num_comment_pages = 0;
1022
1023         /**
1024          * Set if query is single post.
1025          *
1026          * @since 1.5.0
1027          * @access public
1028          * @var bool
1029          */
1030         var $is_single = false;
1031
1032         /**
1033          * Set if query is preview of blog.
1034          *
1035          * @since 2.0.0
1036          * @access public
1037          * @var bool
1038          */
1039         var $is_preview = false;
1040
1041         /**
1042          * Set if query returns a page.
1043          *
1044          * @since 1.5.0
1045          * @access public
1046          * @var bool
1047          */
1048         var $is_page = false;
1049
1050         /**
1051          * Set if query is an archive list.
1052          *
1053          * @since 1.5.0
1054          * @access public
1055          * @var bool
1056          */
1057         var $is_archive = false;
1058
1059         /**
1060          * Set if query is part of a date.
1061          *
1062          * @since 1.5.0
1063          * @access public
1064          * @var bool
1065          */
1066         var $is_date = false;
1067
1068         /**
1069          * Set if query contains a year.
1070          *
1071          * @since 1.5.0
1072          * @access public
1073          * @var bool
1074          */
1075         var $is_year = false;
1076
1077         /**
1078          * Set if query contains a month.
1079          *
1080          * @since 1.5.0
1081          * @access public
1082          * @var bool
1083          */
1084         var $is_month = false;
1085
1086         /**
1087          * Set if query contains a day.
1088          *
1089          * @since 1.5.0
1090          * @access public
1091          * @var bool
1092          */
1093         var $is_day = false;
1094
1095         /**
1096          * Set if query contains time.
1097          *
1098          * @since 1.5.0
1099          * @access public
1100          * @var bool
1101          */
1102         var $is_time = false;
1103
1104         /**
1105          * Set if query contains an author.
1106          *
1107          * @since 1.5.0
1108          * @access public
1109          * @var bool
1110          */
1111         var $is_author = false;
1112
1113         /**
1114          * Set if query contains category.
1115          *
1116          * @since 1.5.0
1117          * @access public
1118          * @var bool
1119          */
1120         var $is_category = false;
1121
1122         /**
1123          * Set if query contains tag.
1124          *
1125          * @since 2.3.0
1126          * @access public
1127          * @var bool
1128          */
1129         var $is_tag = false;
1130
1131         /**
1132          * Set if query contains taxonomy.
1133          *
1134          * @since 2.5.0
1135          * @access public
1136          * @var bool
1137          */
1138         var $is_tax = false;
1139
1140         /**
1141          * Set if query was part of a search result.
1142          *
1143          * @since 1.5.0
1144          * @access public
1145          * @var bool
1146          */
1147         var $is_search = false;
1148
1149         /**
1150          * Set if query is feed display.
1151          *
1152          * @since 1.5.0
1153          * @access public
1154          * @var bool
1155          */
1156         var $is_feed = false;
1157
1158         /**
1159          * Set if query is comment feed display.
1160          *
1161          * @since 2.2.0
1162          * @access public
1163          * @var bool
1164          */
1165         var $is_comment_feed = false;
1166
1167         /**
1168          * Set if query is trackback.
1169          *
1170          * @since 1.5.0
1171          * @access public
1172          * @var bool
1173          */
1174         var $is_trackback = false;
1175
1176         /**
1177          * Set if query is blog homepage.
1178          *
1179          * @since 1.5.0
1180          * @access public
1181          * @var bool
1182          */
1183         var $is_home = false;
1184
1185         /**
1186          * Set if query couldn't found anything.
1187          *
1188          * @since 1.5.0
1189          * @access public
1190          * @var bool
1191          */
1192         var $is_404 = false;
1193
1194         /**
1195          * Set if query is within comments popup window.
1196          *
1197          * @since 1.5.0
1198          * @access public
1199          * @var bool
1200          */
1201         var $is_comments_popup = false;
1202
1203         /**
1204          * Set if query is paged
1205          *
1206          * @since 1.5.0
1207          * @access public
1208          * @var bool
1209          */
1210         var $is_paged = false;
1211
1212         /**
1213          * Set if query is part of administration page.
1214          *
1215          * @since 1.5.0
1216          * @access public
1217          * @var bool
1218          */
1219         var $is_admin = false;
1220
1221         /**
1222          * Set if query is an attachment.
1223          *
1224          * @since 2.0.0
1225          * @access public
1226          * @var bool
1227          */
1228         var $is_attachment = false;
1229
1230         /**
1231          * Set if is single, is a page, or is an attachment.
1232          *
1233          * @since 2.1.0
1234          * @access public
1235          * @var bool
1236          */
1237         var $is_singular = false;
1238
1239         /**
1240          * Set if query is for robots.
1241          *
1242          * @since 2.1.0
1243          * @access public
1244          * @var bool
1245          */
1246         var $is_robots = false;
1247
1248         /**
1249          * Set if query contains posts.
1250          *
1251          * Basically, the homepage if the option isn't set for the static homepage.
1252          *
1253          * @since 2.1.0
1254          * @access public
1255          * @var bool
1256          */
1257         var $is_posts_page = false;
1258
1259         /**
1260          * Set if query is for a post type archive.
1261          *
1262          * @since 3.1.0
1263          * @access public
1264          * @var bool
1265          */
1266         var $is_post_type_archive = false;
1267
1268         /**
1269          * Stores the ->query_vars state like md5(serialize( $this->query_vars ) ) so we know
1270          * whether we have to re-parse because something has changed
1271          *
1272          * @since 3.1.0
1273          * @access private
1274          */
1275         var $query_vars_hash = false;
1276
1277         /**
1278          * Whether query vars have changed since the initial parse_query() call. Used to catch modifications to query vars made
1279          * via pre_get_posts hooks.
1280          *
1281          * @since 3.1.1
1282          * @access private
1283          */
1284         var $query_vars_changed = true;
1285
1286         /**
1287          * Set if post thumbnails are cached
1288          *
1289          * @since 3.2.0
1290          * @access public
1291          * @var bool
1292          */
1293          var $thumbnails_cached = false;
1294
1295         /**
1296          * Cached list of search stopwords.
1297          *
1298          * @since 3.7.0
1299          * @var array
1300          */
1301         private $stopwords;
1302
1303         /**
1304          * Resets query flags to false.
1305          *
1306          * The query flags are what page info WordPress was able to figure out.
1307          *
1308          * @since 2.0.0
1309          * @access private
1310          */
1311         function init_query_flags() {
1312                 $this->is_single = false;
1313                 $this->is_preview = false;
1314                 $this->is_page = false;
1315                 $this->is_archive = false;
1316                 $this->is_date = false;
1317                 $this->is_year = false;
1318                 $this->is_month = false;
1319                 $this->is_day = false;
1320                 $this->is_time = false;
1321                 $this->is_author = false;
1322                 $this->is_category = false;
1323                 $this->is_tag = false;
1324                 $this->is_tax = false;
1325                 $this->is_search = false;
1326                 $this->is_feed = false;
1327                 $this->is_comment_feed = false;
1328                 $this->is_trackback = false;
1329                 $this->is_home = false;
1330                 $this->is_404 = false;
1331                 $this->is_comments_popup = false;
1332                 $this->is_paged = false;
1333                 $this->is_admin = false;
1334                 $this->is_attachment = false;
1335                 $this->is_singular = false;
1336                 $this->is_robots = false;
1337                 $this->is_posts_page = false;
1338                 $this->is_post_type_archive = false;
1339         }
1340
1341         /**
1342          * Initiates object properties and sets default values.
1343          *
1344          * @since 1.5.0
1345          * @access public
1346          */
1347         function init() {
1348                 unset($this->posts);
1349                 unset($this->query);
1350                 $this->query_vars = array();
1351                 unset($this->queried_object);
1352                 unset($this->queried_object_id);
1353                 $this->post_count = 0;
1354                 $this->current_post = -1;
1355                 $this->in_the_loop = false;
1356                 unset( $this->request );
1357                 unset( $this->post );
1358                 unset( $this->comments );
1359                 unset( $this->comment );
1360                 $this->comment_count = 0;
1361                 $this->current_comment = -1;
1362                 $this->found_posts = 0;
1363                 $this->max_num_pages = 0;
1364                 $this->max_num_comment_pages = 0;
1365
1366                 $this->init_query_flags();
1367         }
1368
1369         /**
1370          * Reparse the query vars.
1371          *
1372          * @since 1.5.0
1373          * @access public
1374          */
1375         function parse_query_vars() {
1376                 $this->parse_query();
1377         }
1378
1379         /**
1380          * Fills in the query variables, which do not exist within the parameter.
1381          *
1382          * @since 2.1.0
1383          * @access public
1384          *
1385          * @param array $array Defined query variables.
1386          * @return array Complete query variables with undefined ones filled in empty.
1387          */
1388         function fill_query_vars($array) {
1389                 $keys = array(
1390                         'error'
1391                         , 'm'
1392                         , 'p'
1393                         , 'post_parent'
1394                         , 'subpost'
1395                         , 'subpost_id'
1396                         , 'attachment'
1397                         , 'attachment_id'
1398                         , 'name'
1399                         , 'static'
1400                         , 'pagename'
1401                         , 'page_id'
1402                         , 'second'
1403                         , 'minute'
1404                         , 'hour'
1405                         , 'day'
1406                         , 'monthnum'
1407                         , 'year'
1408                         , 'w'
1409                         , 'category_name'
1410                         , 'tag'
1411                         , 'cat'
1412                         , 'tag_id'
1413                         , 'author'
1414                         , 'author_name'
1415                         , 'feed'
1416                         , 'tb'
1417                         , 'paged'
1418                         , 'comments_popup'
1419                         , 'meta_key'
1420                         , 'meta_value'
1421                         , 'preview'
1422                         , 's'
1423                         , 'sentence'
1424                         , 'fields'
1425                         , 'menu_order'
1426                 );
1427
1428                 foreach ( $keys as $key ) {
1429                         if ( !isset($array[$key]) )
1430                                 $array[$key] = '';
1431                 }
1432
1433                 $array_keys = array( 'category__in', 'category__not_in', 'category__and', 'post__in', 'post__not_in',
1434                         'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'post_parent__in', 'post_parent__not_in',
1435                         'author__in', 'author__not_in' );
1436
1437                 foreach ( $array_keys as $key ) {
1438                         if ( !isset($array[$key]) )
1439                                 $array[$key] = array();
1440                 }
1441                 return $array;
1442         }
1443
1444         /**
1445          * Parse a query string and set query type booleans.
1446          *
1447          * @since 1.5.0
1448          * @access public
1449          *
1450          * @param string|array $query Optional query.
1451          */
1452         function parse_query( $query =  '' ) {
1453                 if ( ! empty( $query ) ) {
1454                         $this->init();
1455                         $this->query = $this->query_vars = wp_parse_args( $query );
1456                 } elseif ( ! isset( $this->query ) ) {
1457                         $this->query = $this->query_vars;
1458                 }
1459
1460                 $this->query_vars = $this->fill_query_vars($this->query_vars);
1461                 $qv = &$this->query_vars;
1462                 $this->query_vars_changed = true;
1463
1464                 if ( ! empty($qv['robots']) )
1465                         $this->is_robots = true;
1466
1467                 $qv['p'] =  absint($qv['p']);
1468                 $qv['page_id'] =  absint($qv['page_id']);
1469                 $qv['year'] = absint($qv['year']);
1470                 $qv['monthnum'] = absint($qv['monthnum']);
1471                 $qv['day'] = absint($qv['day']);
1472                 $qv['w'] = absint($qv['w']);
1473                 $qv['m'] = preg_replace( '|[^0-9]|', '', $qv['m'] );
1474                 $qv['paged'] = absint($qv['paged']);
1475                 $qv['cat'] = preg_replace( '|[^0-9,-]|', '', $qv['cat'] ); // comma separated list of positive or negative integers
1476                 $qv['author'] = preg_replace( '|[^0-9,-]|', '', $qv['author'] ); // comma separated list of positive or negative integers
1477                 $qv['pagename'] = trim( $qv['pagename'] );
1478                 $qv['name'] = trim( $qv['name'] );
1479                 if ( '' !== $qv['hour'] ) $qv['hour'] = absint($qv['hour']);
1480                 if ( '' !== $qv['minute'] ) $qv['minute'] = absint($qv['minute']);
1481                 if ( '' !== $qv['second'] ) $qv['second'] = absint($qv['second']);
1482                 if ( '' !== $qv['menu_order'] ) $qv['menu_order'] = absint($qv['menu_order']);
1483
1484                 // Fairly insane upper bound for search string lengths.
1485                 if ( ! empty( $qv['s'] ) && strlen( $qv['s'] ) > 1600 )
1486                         $qv['s'] = '';
1487
1488                 // Compat. Map subpost to attachment.
1489                 if ( '' != $qv['subpost'] )
1490                         $qv['attachment'] = $qv['subpost'];
1491                 if ( '' != $qv['subpost_id'] )
1492                         $qv['attachment_id'] = $qv['subpost_id'];
1493
1494                 $qv['attachment_id'] = absint($qv['attachment_id']);
1495
1496                 if ( ('' != $qv['attachment']) || !empty($qv['attachment_id']) ) {
1497                         $this->is_single = true;
1498                         $this->is_attachment = true;
1499                 } elseif ( '' != $qv['name'] ) {
1500                         $this->is_single = true;
1501                 } elseif ( $qv['p'] ) {
1502                         $this->is_single = true;
1503                 } elseif ( ('' !== $qv['hour']) && ('' !== $qv['minute']) &&('' !== $qv['second']) && ('' != $qv['year']) && ('' != $qv['monthnum']) && ('' != $qv['day']) ) {
1504                         // If year, month, day, hour, minute, and second are set, a single
1505                         // post is being queried.
1506                         $this->is_single = true;
1507                 } elseif ( '' != $qv['static'] || '' != $qv['pagename'] || !empty($qv['page_id']) ) {
1508                         $this->is_page = true;
1509                         $this->is_single = false;
1510                 } else {
1511                 // Look for archive queries. Dates, categories, authors, search, post type archives.
1512
1513                         if ( !empty($qv['s']) ) {
1514                                 $this->is_search = true;
1515                         }
1516
1517                         if ( '' !== $qv['second'] ) {
1518                                 $this->is_time = true;
1519                                 $this->is_date = true;
1520                         }
1521
1522                         if ( '' !== $qv['minute'] ) {
1523                                 $this->is_time = true;
1524                                 $this->is_date = true;
1525                         }
1526
1527                         if ( '' !== $qv['hour'] ) {
1528                                 $this->is_time = true;
1529                                 $this->is_date = true;
1530                         }
1531
1532                         if ( $qv['day'] ) {
1533                                 if ( ! $this->is_date ) {
1534                                         $date = sprintf( '%04d-%02d-%02d', $qv['year'], $qv['monthnum'], $qv['day'] );
1535                                         if ( $qv['monthnum'] && $qv['year'] && ! wp_checkdate( $qv['monthnum'], $qv['day'], $qv['year'], $date ) ) {
1536                                                 $qv['error'] = '404';
1537                                         } else {
1538                                                 $this->is_day = true;
1539                                                 $this->is_date = true;
1540                                         }
1541                                 }
1542                         }
1543
1544                         if ( $qv['monthnum'] ) {
1545                                 if ( ! $this->is_date ) {
1546                                         if ( 12 < $qv['monthnum'] ) {
1547                                                 $qv['error'] = '404';
1548                                         } else {
1549                                                 $this->is_month = true;
1550                                                 $this->is_date = true;
1551                                         }
1552                                 }
1553                         }
1554
1555                         if ( $qv['year'] ) {
1556                                 if ( ! $this->is_date ) {
1557                                         $this->is_year = true;
1558                                         $this->is_date = true;
1559                                 }
1560                         }
1561
1562                         if ( $qv['m'] ) {
1563                                 $this->is_date = true;
1564                                 if ( strlen($qv['m']) > 9 ) {
1565                                         $this->is_time = true;
1566                                 } else if ( strlen($qv['m']) > 7 ) {
1567                                         $this->is_day = true;
1568                                 } else if ( strlen($qv['m']) > 5 ) {
1569                                         $this->is_month = true;
1570                                 } else {
1571                                         $this->is_year = true;
1572                                 }
1573                         }
1574
1575                         if ( '' != $qv['w'] ) {
1576                                 $this->is_date = true;
1577                         }
1578
1579                         $this->query_vars_hash = false;
1580                         $this->parse_tax_query( $qv );
1581
1582                         foreach ( $this->tax_query->queries as $tax_query ) {
1583                                 if ( 'NOT IN' != $tax_query['operator'] ) {
1584                                         switch ( $tax_query['taxonomy'] ) {
1585                                                 case 'category':
1586                                                         $this->is_category = true;
1587                                                         break;
1588                                                 case 'post_tag':
1589                                                         $this->is_tag = true;
1590                                                         break;
1591                                                 default:
1592                                                         $this->is_tax = true;
1593                                         }
1594                                 }
1595                         }
1596                         unset( $tax_query );
1597
1598                         if ( empty($qv['author']) || ($qv['author'] == '0') ) {
1599                                 $this->is_author = false;
1600                         } else {
1601                                 $this->is_author = true;
1602                         }
1603
1604                         if ( '' != $qv['author_name'] )
1605                                 $this->is_author = true;
1606
1607                         if ( !empty( $qv['post_type'] ) && ! is_array( $qv['post_type'] ) ) {
1608                                 $post_type_obj = get_post_type_object( $qv['post_type'] );
1609                                 if ( ! empty( $post_type_obj->has_archive ) )
1610                                         $this->is_post_type_archive = true;
1611                         }
1612
1613                         if ( $this->is_post_type_archive || $this->is_date || $this->is_author || $this->is_category || $this->is_tag || $this->is_tax )
1614                                 $this->is_archive = true;
1615                 }
1616
1617                 if ( '' != $qv['feed'] )
1618                         $this->is_feed = true;
1619
1620                 if ( '' != $qv['tb'] )
1621                         $this->is_trackback = true;
1622
1623                 if ( '' != $qv['paged'] && ( intval($qv['paged']) > 1 ) )
1624                         $this->is_paged = true;
1625
1626                 if ( '' != $qv['comments_popup'] )
1627                         $this->is_comments_popup = true;
1628
1629                 // if we're previewing inside the write screen
1630                 if ( '' != $qv['preview'] )
1631                         $this->is_preview = true;
1632
1633                 if ( is_admin() )
1634                         $this->is_admin = true;
1635
1636                 if ( false !== strpos($qv['feed'], 'comments-') ) {
1637                         $qv['feed'] = str_replace('comments-', '', $qv['feed']);
1638                         $qv['withcomments'] = 1;
1639                 }
1640
1641                 $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
1642
1643                 if ( $this->is_feed && ( !empty($qv['withcomments']) || ( empty($qv['withoutcomments']) && $this->is_singular ) ) )
1644                         $this->is_comment_feed = true;
1645
1646                 if ( !( $this->is_singular || $this->is_archive || $this->is_search || $this->is_feed || $this->is_trackback || $this->is_404 || $this->is_admin || $this->is_comments_popup || $this->is_robots ) )
1647                         $this->is_home = true;
1648
1649                 // Correct is_* for page_on_front and page_for_posts
1650                 if ( $this->is_home && 'page' == get_option('show_on_front') && get_option('page_on_front') ) {
1651                         $_query = wp_parse_args($this->query);
1652                         // pagename can be set and empty depending on matched rewrite rules. Ignore an empty pagename.
1653                         if ( isset($_query['pagename']) && '' == $_query['pagename'] )
1654                                 unset($_query['pagename']);
1655                         if ( empty($_query) || !array_diff( array_keys($_query), array('preview', 'page', 'paged', 'cpage') ) ) {
1656                                 $this->is_page = true;
1657                                 $this->is_home = false;
1658                                 $qv['page_id'] = get_option('page_on_front');
1659                                 // Correct <!--nextpage--> for page_on_front
1660                                 if ( !empty($qv['paged']) ) {
1661                                         $qv['page'] = $qv['paged'];
1662                                         unset($qv['paged']);
1663                                 }
1664                         }
1665                 }
1666
1667                 if ( '' != $qv['pagename'] ) {
1668                         $this->queried_object = get_page_by_path($qv['pagename']);
1669                         if ( !empty($this->queried_object) )
1670                                 $this->queried_object_id = (int) $this->queried_object->ID;
1671                         else
1672                                 unset($this->queried_object);
1673
1674                         if  ( 'page' == get_option('show_on_front') && isset($this->queried_object_id) && $this->queried_object_id == get_option('page_for_posts') ) {
1675                                 $this->is_page = false;
1676                                 $this->is_home = true;
1677                                 $this->is_posts_page = true;
1678                         }
1679                 }
1680
1681                 if ( $qv['page_id'] ) {
1682                         if  ( 'page' == get_option('show_on_front') && $qv['page_id'] == get_option('page_for_posts') ) {
1683                                 $this->is_page = false;
1684                                 $this->is_home = true;
1685                                 $this->is_posts_page = true;
1686                         }
1687                 }
1688
1689                 if ( !empty($qv['post_type']) ) {
1690                         if ( is_array($qv['post_type']) )
1691                                 $qv['post_type'] = array_map('sanitize_key', $qv['post_type']);
1692                         else
1693                                 $qv['post_type'] = sanitize_key($qv['post_type']);
1694                 }
1695
1696                 if ( ! empty( $qv['post_status'] ) ) {
1697                         if ( is_array( $qv['post_status'] ) )
1698                                 $qv['post_status'] = array_map('sanitize_key', $qv['post_status']);
1699                         else
1700                                 $qv['post_status'] = preg_replace('|[^a-z0-9_,-]|', '', $qv['post_status']);
1701                 }
1702
1703                 if ( $this->is_posts_page && ( ! isset($qv['withcomments']) || ! $qv['withcomments'] ) )
1704                         $this->is_comment_feed = false;
1705
1706                 $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
1707                 // Done correcting is_* for page_on_front and page_for_posts
1708
1709                 if ( '404' == $qv['error'] )
1710                         $this->set_404();
1711
1712                 $this->query_vars_hash = md5( serialize( $this->query_vars ) );
1713                 $this->query_vars_changed = false;
1714
1715                 do_action_ref_array('parse_query', array(&$this));
1716         }
1717
1718         /**
1719          * Parses various taxonomy related query vars.
1720          *
1721          * @access protected
1722          * @since 3.1.0
1723          *
1724          * @param array &$q The query variables
1725          */
1726         function parse_tax_query( &$q ) {
1727                 if ( ! empty( $q['tax_query'] ) && is_array( $q['tax_query'] ) ) {
1728                         $tax_query = $q['tax_query'];
1729                 } else {
1730                         $tax_query = array();
1731                 }
1732
1733                 if ( !empty($q['taxonomy']) && !empty($q['term']) ) {
1734                         $tax_query[] = array(
1735                                 'taxonomy' => $q['taxonomy'],
1736                                 'terms' => array( $q['term'] ),
1737                                 'field' => 'slug',
1738                         );
1739                 }
1740
1741                 foreach ( get_taxonomies( array() , 'objects' ) as $taxonomy => $t ) {
1742                         if ( 'post_tag' == $taxonomy )
1743                                 continue;       // Handled further down in the $q['tag'] block
1744
1745                         if ( $t->query_var && !empty( $q[$t->query_var] ) ) {
1746                                 $tax_query_defaults = array(
1747                                         'taxonomy' => $taxonomy,
1748                                         'field' => 'slug',
1749                                 );
1750
1751                                 if ( isset( $t->rewrite['hierarchical'] ) && $t->rewrite['hierarchical'] ) {
1752                                         $q[$t->query_var] = wp_basename( $q[$t->query_var] );
1753                                 }
1754
1755                                 $term = $q[$t->query_var];
1756
1757                                 if ( strpos($term, '+') !== false ) {
1758                                         $terms = preg_split( '/[+]+/', $term );
1759                                         foreach ( $terms as $term ) {
1760                                                 $tax_query[] = array_merge( $tax_query_defaults, array(
1761                                                         'terms' => array( $term )
1762                                                 ) );
1763                                         }
1764                                 } else {
1765                                         $tax_query[] = array_merge( $tax_query_defaults, array(
1766                                                 'terms' => preg_split( '/[,]+/', $term )
1767                                         ) );
1768                                 }
1769                         }
1770                 }
1771
1772                 // Category stuff
1773                 if ( ! empty( $q['cat'] ) && ! $this->is_singular ) {
1774                         $cat_in = $cat_not_in = array();
1775
1776                         $cat_array = preg_split( '/[,\s]+/', urldecode( $q['cat'] ) );
1777                         $cat_array = array_map( 'intval', $cat_array );
1778                         $q['cat'] = implode( ',', $cat_array );
1779
1780                         foreach ( $cat_array as $cat ) {
1781                                 if ( $cat > 0 )
1782                                         $cat_in[] = $cat;
1783                                 elseif ( $cat < 0 )
1784                                         $cat_not_in[] = abs( $cat );
1785                         }
1786
1787                         if ( ! empty( $cat_in ) ) {
1788                                 $tax_query[] = array(
1789                                         'taxonomy' => 'category',
1790                                         'terms' => $cat_in,
1791                                         'field' => 'term_id',
1792                                         'include_children' => true
1793                                 );
1794                         }
1795
1796                         if ( ! empty( $cat_not_in ) ) {
1797                                 $tax_query[] = array(
1798                                         'taxonomy' => 'category',
1799                                         'terms' => $cat_not_in,
1800                                         'field' => 'term_id',
1801                                         'operator' => 'NOT IN',
1802                                         'include_children' => true
1803                                 );
1804                         }
1805                         unset( $cat_array, $cat_in, $cat_not_in );
1806                 }
1807
1808                 if ( ! empty( $q['category__and'] ) && 1 === count( (array) $q['category__and'] ) ) {
1809                         $q['category__and'] = (array) $q['category__and'];
1810                         if ( ! isset( $q['category__in'] ) )
1811                                 $q['category__in'] = array();
1812                         $q['category__in'][] = absint( reset( $q['category__and'] ) );
1813                         unset( $q['category__and'] );
1814                 }
1815
1816                 if ( ! empty( $q['category__in'] ) ) {
1817                         $q['category__in'] = array_map( 'absint', array_unique( (array) $q['category__in'] ) );
1818                         $tax_query[] = array(
1819                                 'taxonomy' => 'category',
1820                                 'terms' => $q['category__in'],
1821                                 'field' => 'term_id',
1822                                 'include_children' => false
1823                         );
1824                 }
1825
1826                 if ( ! empty($q['category__not_in']) ) {
1827                         $q['category__not_in'] = array_map( 'absint', array_unique( (array) $q['category__not_in'] ) );
1828                         $tax_query[] = array(
1829                                 'taxonomy' => 'category',
1830                                 'terms' => $q['category__not_in'],
1831                                 'operator' => 'NOT IN',
1832                                 'include_children' => false
1833                         );
1834                 }
1835
1836                 if ( ! empty($q['category__and']) ) {
1837                         $q['category__and'] = array_map( 'absint', array_unique( (array) $q['category__and'] ) );
1838                         $tax_query[] = array(
1839                                 'taxonomy' => 'category',
1840                                 'terms' => $q['category__and'],
1841                                 'field' => 'term_id',
1842                                 'operator' => 'AND',
1843                                 'include_children' => false
1844                         );
1845                 }
1846
1847                 // Tag stuff
1848                 if ( '' != $q['tag'] && !$this->is_singular && $this->query_vars_changed ) {
1849                         if ( strpos($q['tag'], ',') !== false ) {
1850                                 $tags = preg_split('/[,\r\n\t ]+/', $q['tag']);
1851                                 foreach ( (array) $tags as $tag ) {
1852                                         $tag = sanitize_term_field('slug', $tag, 0, 'post_tag', 'db');
1853                                         $q['tag_slug__in'][] = $tag;
1854                                 }
1855                         } else if ( preg_match('/[+\r\n\t ]+/', $q['tag']) || !empty($q['cat']) ) {
1856                                 $tags = preg_split('/[+\r\n\t ]+/', $q['tag']);
1857                                 foreach ( (array) $tags as $tag ) {
1858                                         $tag = sanitize_term_field('slug', $tag, 0, 'post_tag', 'db');
1859                                         $q['tag_slug__and'][] = $tag;
1860                                 }
1861                         } else {
1862                                 $q['tag'] = sanitize_term_field('slug', $q['tag'], 0, 'post_tag', 'db');
1863                                 $q['tag_slug__in'][] = $q['tag'];
1864                         }
1865                 }
1866
1867                 if ( !empty($q['tag_id']) ) {
1868                         $q['tag_id'] = absint( $q['tag_id'] );
1869                         $tax_query[] = array(
1870                                 'taxonomy' => 'post_tag',
1871                                 'terms' => $q['tag_id']
1872                         );
1873                 }
1874
1875                 if ( !empty($q['tag__in']) ) {
1876                         $q['tag__in'] = array_map('absint', array_unique( (array) $q['tag__in'] ) );
1877                         $tax_query[] = array(
1878                                 'taxonomy' => 'post_tag',
1879                                 'terms' => $q['tag__in']
1880                         );
1881                 }
1882
1883                 if ( !empty($q['tag__not_in']) ) {
1884                         $q['tag__not_in'] = array_map('absint', array_unique( (array) $q['tag__not_in'] ) );
1885                         $tax_query[] = array(
1886                                 'taxonomy' => 'post_tag',
1887                                 'terms' => $q['tag__not_in'],
1888                                 'operator' => 'NOT IN'
1889                         );
1890                 }
1891
1892                 if ( !empty($q['tag__and']) ) {
1893                         $q['tag__and'] = array_map('absint', array_unique( (array) $q['tag__and'] ) );
1894                         $tax_query[] = array(
1895                                 'taxonomy' => 'post_tag',
1896                                 'terms' => $q['tag__and'],
1897                                 'operator' => 'AND'
1898                         );
1899                 }
1900
1901                 if ( !empty($q['tag_slug__in']) ) {
1902                         $q['tag_slug__in'] = array_map('sanitize_title_for_query', array_unique( (array) $q['tag_slug__in'] ) );
1903                         $tax_query[] = array(
1904                                 'taxonomy' => 'post_tag',
1905                                 'terms' => $q['tag_slug__in'],
1906                                 'field' => 'slug'
1907                         );
1908                 }
1909
1910                 if ( !empty($q['tag_slug__and']) ) {
1911                         $q['tag_slug__and'] = array_map('sanitize_title_for_query', array_unique( (array) $q['tag_slug__and'] ) );
1912                         $tax_query[] = array(
1913                                 'taxonomy' => 'post_tag',
1914                                 'terms' => $q['tag_slug__and'],
1915                                 'field' => 'slug',
1916                                 'operator' => 'AND'
1917                         );
1918                 }
1919
1920                 $this->tax_query = new WP_Tax_Query( $tax_query );
1921
1922                 do_action( 'parse_tax_query', $this );
1923         }
1924
1925         /**
1926          * Generate SQL for the WHERE clause based on passed search terms.
1927          *
1928          * @since 3.7.0
1929          *
1930          * @global wpdb $wpdb
1931          * @param array $q Query variables.
1932          * @return string WHERE clause.
1933          */
1934         protected function parse_search( &$q ) {
1935                 global $wpdb;
1936
1937                 $search = '';
1938
1939                 // added slashes screw with quote grouping when done early, so done later
1940                 $q['s'] = stripslashes( $q['s'] );
1941                 if ( empty( $_GET['s'] ) && $this->is_main_query() )
1942                         $q['s'] = urldecode( $q['s'] );
1943                 // there are no line breaks in <input /> fields
1944                 $q['s'] = str_replace( array( "\r", "\n" ), '', $q['s'] );
1945                 $q['search_terms_count'] = 1;
1946                 if ( ! empty( $q['sentence'] ) ) {
1947                         $q['search_terms'] = array( $q['s'] );
1948                 } else {
1949                         if ( preg_match_all( '/".*?("|$)|((?<=[\t ",+])|^)[^\t ",+]+/', $q['s'], $matches ) ) {
1950                                 $q['search_terms_count'] = count( $matches[0] );
1951                                 $q['search_terms'] = $this->parse_search_terms( $matches[0] );
1952                                 // if the search string has only short terms or stopwords, or is 10+ terms long, match it as sentence
1953                                 if ( empty( $q['search_terms'] ) || count( $q['search_terms'] ) > 9 )
1954                                         $q['search_terms'] = array( $q['s'] );
1955                         } else {
1956                                 $q['search_terms'] = array( $q['s'] );
1957                         }
1958                 }
1959
1960                 $n = ! empty( $q['exact'] ) ? '' : '%';
1961                 $searchand = '';
1962                 $q['search_orderby_title'] = array();
1963                 foreach ( $q['search_terms'] as $term ) {
1964                         $term = like_escape( esc_sql( $term ) );
1965                         if ( $n )
1966                                 $q['search_orderby_title'][] = "$wpdb->posts.post_title LIKE '%$term%'";
1967
1968                         $search .= "{$searchand}(($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') OR ($wpdb->posts.post_content LIKE '{$n}{$term}{$n}'))";
1969                         $searchand = ' AND ';
1970                 }
1971
1972                 if ( ! empty( $search ) ) {
1973                         $search = " AND ({$search}) ";
1974                         if ( ! is_user_logged_in() )
1975                                 $search .= " AND ($wpdb->posts.post_password = '') ";
1976                 }
1977
1978                 return $search;
1979         }
1980
1981         /**
1982          * Check if the terms are suitable for searching.
1983          *
1984          * Uses an array of stopwords (terms) that are excluded from the separate
1985          * term matching when searching for posts. The list of English stopwords is
1986          * the approximate search engines list, and is translatable.
1987          *
1988          * @since 3.7.0
1989          *
1990          * @param array Terms to check.
1991          * @return array Terms that are not stopwords.
1992          */
1993         protected function parse_search_terms( $terms ) {
1994                 $strtolower = function_exists( 'mb_strtolower' ) ? 'mb_strtolower' : 'strtolower';
1995                 $checked = array();
1996
1997                 $stopwords = $this->get_search_stopwords();
1998
1999                 foreach ( $terms as $term ) {
2000                         // keep before/after spaces when term is for exact match
2001                         if ( preg_match( '/^".+"$/', $term ) )
2002                                 $term = trim( $term, "\"'" );
2003                         else
2004                                 $term = trim( $term, "\"' " );
2005
2006                         // Avoid single A-Z.
2007                         if ( ! $term || ( 1 === strlen( $term ) && preg_match( '/^[a-z]$/i', $term ) ) )
2008                                 continue;
2009
2010                         if ( in_array( call_user_func( $strtolower, $term ), $stopwords, true ) )
2011                                 continue;
2012
2013                         $checked[] = $term;
2014                 }
2015
2016                 return $checked;
2017         }
2018
2019         /**
2020          * Retrieve stopwords used when parsing search terms.
2021          *
2022          * @since 3.7.0
2023          *
2024          * @return array Stopwords.
2025          */
2026         protected function get_search_stopwords() {
2027                 if ( isset( $this->stopwords ) )
2028                         return $this->stopwords;
2029
2030                 /* translators: This is a comma-separated list of very common words that should be excluded from a search,
2031                  * like a, an, and the. These are usually called "stopwords". You should not simply translate these individual
2032                  * words into your language. Instead, look for and provide commonly accepted stopwords in your language.
2033                  */
2034                 $words = explode( ',', _x( 'about,an,are,as,at,be,by,com,for,from,how,in,is,it,of,on,or,that,the,this,to,was,what,when,where,who,will,with,www',
2035                         'Comma-separated list of search stopwords in your language' ) );
2036
2037                 $stopwords = array();
2038                 foreach( $words as $word ) {
2039                         $word = trim( $word, "\r\n\t " );
2040                         if ( $word )
2041                                 $stopwords[] = $word;
2042                 }
2043
2044                 /**
2045                  * Filter stopwords used when parsing search terms.
2046                  *
2047                  * @since 3.7.0
2048                  *
2049                  * @param array $stopwords Stopwords.
2050                  */
2051                 $this->stopwords = apply_filters( 'wp_search_stopwords', $stopwords );
2052                 return $this->stopwords;
2053         }
2054
2055         /**
2056          * Generate SQL for the ORDER BY condition based on passed search terms.
2057          *
2058          * @global wpdb $wpdb
2059          * @param array $q Query variables.
2060          * @return string ORDER BY clause.
2061          */
2062         protected function parse_search_order( &$q ) {
2063                 global $wpdb;
2064
2065                 $search_orderby = '';
2066
2067                 if ( $q['search_terms_count'] > 1 ) {
2068                         $num_terms = count( $q['search_orderby_title'] );
2069                         $search_orderby_s = like_escape( esc_sql( $q['s'] ) );
2070
2071                         $search_orderby = '(CASE ';
2072                         // sentence match in 'post_title'
2073                         $search_orderby .= "WHEN $wpdb->posts.post_title LIKE '%{$search_orderby_s}%' THEN 1 ";
2074
2075                         // sanity limit, sort as sentence when more than 6 terms
2076                         // (few searches are longer than 6 terms and most titles are not)
2077                         if ( $num_terms < 7 ) {
2078                                 // all words in title
2079                                 $search_orderby .= 'WHEN ' . implode( ' AND ', $q['search_orderby_title'] ) . ' THEN 2 ';
2080                                 // any word in title, not needed when $num_terms == 1
2081                                 if ( $num_terms > 1 )
2082                                         $search_orderby .= 'WHEN ' . implode( ' OR ', $q['search_orderby_title'] ) . ' THEN 3 ';
2083                         }
2084
2085                         // sentence match in 'post_content'
2086                         $search_orderby .= "WHEN $wpdb->posts.post_content LIKE '%{$search_orderby_s}%' THEN 4 ";
2087                         $search_orderby .= 'ELSE 5 END)';
2088                 } else {
2089                         // single word or sentence search
2090                         $search_orderby = reset( $q['search_orderby_title'] ) . ' DESC';
2091                 }
2092
2093                 return $search_orderby;
2094         }
2095
2096         /**
2097          * Sets the 404 property and saves whether query is feed.
2098          *
2099          * @since 2.0.0
2100          * @access public
2101          */
2102         function set_404() {
2103                 $is_feed = $this->is_feed;
2104
2105                 $this->init_query_flags();
2106                 $this->is_404 = true;
2107
2108                 $this->is_feed = $is_feed;
2109         }
2110
2111         /**
2112          * Retrieve query variable.
2113          *
2114          * @since 1.5.0
2115          * @access public
2116          *
2117          * @param string $query_var Query variable key.
2118          * @return mixed
2119          */
2120         function get($query_var) {
2121                 if ( isset($this->query_vars[$query_var]) )
2122                         return $this->query_vars[$query_var];
2123
2124                 return '';
2125         }
2126
2127         /**
2128          * Set query variable.
2129          *
2130          * @since 1.5.0
2131          * @access public
2132          *
2133          * @param string $query_var Query variable key.
2134          * @param mixed $value Query variable value.
2135          */
2136         function set($query_var, $value) {
2137                 $this->query_vars[$query_var] = $value;
2138         }
2139
2140         /**
2141          * Retrieve the posts based on query variables.
2142          *
2143          * There are a few filters and actions that can be used to modify the post
2144          * database query.
2145          *
2146          * @since 1.5.0
2147          * @access public
2148          * @uses do_action_ref_array() Calls 'pre_get_posts' hook before retrieving posts.
2149          *
2150          * @return array List of posts.
2151          */
2152         function get_posts() {
2153                 global $wpdb;
2154
2155                 $this->parse_query();
2156
2157                 do_action_ref_array('pre_get_posts', array(&$this));
2158
2159                 // Shorthand.
2160                 $q = &$this->query_vars;
2161
2162                 // Fill again in case pre_get_posts unset some vars.
2163                 $q = $this->fill_query_vars($q);
2164
2165                 // Parse meta query
2166                 $this->meta_query = new WP_Meta_Query();
2167                 $this->meta_query->parse_query_vars( $q );
2168
2169                 // Set a flag if a pre_get_posts hook changed the query vars.
2170                 $hash = md5( serialize( $this->query_vars ) );
2171                 if ( $hash != $this->query_vars_hash ) {
2172                         $this->query_vars_changed = true;
2173                         $this->query_vars_hash = $hash;
2174                 }
2175                 unset($hash);
2176
2177                 // First let's clear some variables
2178                 $distinct = '';
2179                 $whichauthor = '';
2180                 $whichmimetype = '';
2181                 $where = '';
2182                 $limits = '';
2183                 $join = '';
2184                 $search = '';
2185                 $groupby = '';
2186                 $fields = '';
2187                 $post_status_join = false;
2188                 $page = 1;
2189
2190                 if ( isset( $q['caller_get_posts'] ) ) {
2191                         _deprecated_argument( 'WP_Query', '3.1', __( '"caller_get_posts" is deprecated. Use "ignore_sticky_posts" instead.' ) );
2192                         if ( !isset( $q['ignore_sticky_posts'] ) )
2193                                 $q['ignore_sticky_posts'] = $q['caller_get_posts'];
2194                 }
2195
2196                 if ( !isset( $q['ignore_sticky_posts'] ) )
2197                         $q['ignore_sticky_posts'] = false;
2198
2199                 if ( !isset($q['suppress_filters']) )
2200                         $q['suppress_filters'] = false;
2201
2202                 if ( !isset($q['cache_results']) ) {
2203                         if ( wp_using_ext_object_cache() )
2204                                 $q['cache_results'] = false;
2205                         else
2206                                 $q['cache_results'] = true;
2207                 }
2208
2209                 if ( !isset($q['update_post_term_cache']) )
2210                         $q['update_post_term_cache'] = true;
2211
2212                 if ( !isset($q['update_post_meta_cache']) )
2213                         $q['update_post_meta_cache'] = true;
2214
2215                 if ( !isset($q['post_type']) ) {
2216                         if ( $this->is_search )
2217                                 $q['post_type'] = 'any';
2218                         else
2219                                 $q['post_type'] = '';
2220                 }
2221                 $post_type = $q['post_type'];
2222                 if ( !isset($q['posts_per_page']) || $q['posts_per_page'] == 0 )
2223                         $q['posts_per_page'] = get_option('posts_per_page');
2224                 if ( isset($q['showposts']) && $q['showposts'] ) {
2225                         $q['showposts'] = (int) $q['showposts'];
2226                         $q['posts_per_page'] = $q['showposts'];
2227                 }
2228                 if ( (isset($q['posts_per_archive_page']) && $q['posts_per_archive_page'] != 0) && ($this->is_archive || $this->is_search) )
2229                         $q['posts_per_page'] = $q['posts_per_archive_page'];
2230                 if ( !isset($q['nopaging']) ) {
2231                         if ( $q['posts_per_page'] == -1 ) {
2232                                 $q['nopaging'] = true;
2233                         } else {
2234                                 $q['nopaging'] = false;
2235                         }
2236                 }
2237                 if ( $this->is_feed ) {
2238                         $q['posts_per_page'] = get_option('posts_per_rss');
2239                         $q['nopaging'] = false;
2240                 }
2241                 $q['posts_per_page'] = (int) $q['posts_per_page'];
2242                 if ( $q['posts_per_page'] < -1 )
2243                         $q['posts_per_page'] = abs($q['posts_per_page']);
2244                 else if ( $q['posts_per_page'] == 0 )
2245                         $q['posts_per_page'] = 1;
2246
2247                 if ( !isset($q['comments_per_page']) || $q['comments_per_page'] == 0 )
2248                         $q['comments_per_page'] = get_option('comments_per_page');
2249
2250                 if ( $this->is_home && (empty($this->query) || $q['preview'] == 'true') && ( 'page' == get_option('show_on_front') ) && get_option('page_on_front') ) {
2251                         $this->is_page = true;
2252                         $this->is_home = false;
2253                         $q['page_id'] = get_option('page_on_front');
2254                 }
2255
2256                 if ( isset($q['page']) ) {
2257                         $q['page'] = trim($q['page'], '/');
2258                         $q['page'] = absint($q['page']);
2259                 }
2260
2261                 // If true, forcibly turns off SQL_CALC_FOUND_ROWS even when limits are present.
2262                 if ( isset($q['no_found_rows']) )
2263                         $q['no_found_rows'] = (bool) $q['no_found_rows'];
2264                 else
2265                         $q['no_found_rows'] = false;
2266
2267                 switch ( $q['fields'] ) {
2268                         case 'ids':
2269                                 $fields = "$wpdb->posts.ID";
2270                                 break;
2271                         case 'id=>parent':
2272                                 $fields = "$wpdb->posts.ID, $wpdb->posts.post_parent";
2273                                 break;
2274                         default:
2275                                 $fields = "$wpdb->posts.*";
2276                 }
2277
2278                 if ( '' !== $q['menu_order'] )
2279                         $where .= " AND $wpdb->posts.menu_order = " . $q['menu_order'];
2280
2281                 // The "m" parameter is meant for months but accepts datetimes of varying specificity
2282                 if ( $q['m'] ) {
2283                         $where .= " AND YEAR($wpdb->posts.post_date)=" . substr($q['m'], 0, 4);
2284                         if ( strlen($q['m']) > 5 )
2285                                 $where .= " AND MONTH($wpdb->posts.post_date)=" . substr($q['m'], 4, 2);
2286                         if ( strlen($q['m']) > 7 )
2287                                 $where .= " AND DAYOFMONTH($wpdb->posts.post_date)=" . substr($q['m'], 6, 2);
2288                         if ( strlen($q['m']) > 9 )
2289                                 $where .= " AND HOUR($wpdb->posts.post_date)=" . substr($q['m'], 8, 2);
2290                         if ( strlen($q['m']) > 11 )
2291                                 $where .= " AND MINUTE($wpdb->posts.post_date)=" . substr($q['m'], 10, 2);
2292                         if ( strlen($q['m']) > 13 )
2293                                 $where .= " AND SECOND($wpdb->posts.post_date)=" . substr($q['m'], 12, 2);
2294                 }
2295
2296                 // Handle the other individual date parameters
2297                 $date_parameters = array();
2298
2299                 if ( '' !== $q['hour'] )
2300                         $date_parameters['hour'] = $q['hour'];
2301
2302                 if ( '' !== $q['minute'] )
2303                         $date_parameters['minute'] = $q['minute'];
2304
2305                 if ( '' !== $q['second'] )
2306                         $date_parameters['second'] = $q['second'];
2307
2308                 if ( $q['year'] )
2309                         $date_parameters['year'] = $q['year'];
2310
2311                 if ( $q['monthnum'] )
2312                         $date_parameters['monthnum'] = $q['monthnum'];
2313
2314                 if ( $q['w'] )
2315                         $date_parameters['week'] = $q['w'];
2316
2317                 if ( $q['day'] )
2318                         $date_parameters['day'] = $q['day'];
2319
2320                 if ( $date_parameters ) {
2321                         $date_query = new WP_Date_Query( array( $date_parameters ) );
2322                         $where .= $date_query->get_sql();
2323                 }
2324                 unset( $date_parameters, $date_query );
2325
2326                 // Handle complex date queries
2327                 if ( ! empty( $q['date_query'] ) ) {
2328                         $this->date_query = new WP_Date_Query( $q['date_query'] );
2329                         $where .= $this->date_query->get_sql();
2330                 }
2331
2332
2333                 // If we've got a post_type AND it's not "any" post_type.
2334                 if ( !empty($q['post_type']) && 'any' != $q['post_type'] ) {
2335                         foreach ( (array)$q['post_type'] as $_post_type ) {
2336                                 $ptype_obj = get_post_type_object($_post_type);
2337                                 if ( !$ptype_obj || !$ptype_obj->query_var || empty($q[ $ptype_obj->query_var ]) )
2338                                         continue;
2339
2340                                 if ( ! $ptype_obj->hierarchical || strpos($q[ $ptype_obj->query_var ], '/') === false ) {
2341                                         // Non-hierarchical post_types & parent-level-hierarchical post_types can directly use 'name'
2342                                         $q['name'] = $q[ $ptype_obj->query_var ];
2343                                 } else {
2344                                         // Hierarchical post_types will operate through the
2345                                         $q['pagename'] = $q[ $ptype_obj->query_var ];
2346                                         $q['name'] = '';
2347                                 }
2348
2349                                 // Only one request for a slug is possible, this is why name & pagename are overwritten above.
2350                                 break;
2351                         } //end foreach
2352                         unset($ptype_obj);
2353                 }
2354
2355                 if ( '' != $q['name'] ) {
2356                         $q['name'] = sanitize_title_for_query( $q['name'] );
2357                         $where .= " AND $wpdb->posts.post_name = '" . $q['name'] . "'";
2358                 } elseif ( '' != $q['pagename'] ) {
2359                         if ( isset($this->queried_object_id) ) {
2360                                 $reqpage = $this->queried_object_id;
2361                         } else {
2362                                 if ( 'page' != $q['post_type'] ) {
2363                                         foreach ( (array)$q['post_type'] as $_post_type ) {
2364                                                 $ptype_obj = get_post_type_object($_post_type);
2365                                                 if ( !$ptype_obj || !$ptype_obj->hierarchical )
2366                                                         continue;
2367
2368                                                 $reqpage = get_page_by_path($q['pagename'], OBJECT, $_post_type);
2369                                                 if ( $reqpage )
2370                                                         break;
2371                                         }
2372                                         unset($ptype_obj);
2373                                 } else {
2374                                         $reqpage = get_page_by_path($q['pagename']);
2375                                 }
2376                                 if ( !empty($reqpage) )
2377                                         $reqpage = $reqpage->ID;
2378                                 else
2379                                         $reqpage = 0;
2380                         }
2381
2382                         $page_for_posts = get_option('page_for_posts');
2383                         if  ( ('page' != get_option('show_on_front') ) || empty($page_for_posts) || ( $reqpage != $page_for_posts ) ) {
2384                                 $q['pagename'] = sanitize_title_for_query( wp_basename( $q['pagename'] ) );
2385                                 $q['name'] = $q['pagename'];
2386                                 $where .= " AND ($wpdb->posts.ID = '$reqpage')";
2387                                 $reqpage_obj = get_post( $reqpage );
2388                                 if ( is_object($reqpage_obj) && 'attachment' == $reqpage_obj->post_type ) {
2389                                         $this->is_attachment = true;
2390                                         $post_type = $q['post_type'] = 'attachment';
2391                                         $this->is_page = true;
2392                                         $q['attachment_id'] = $reqpage;
2393                                 }
2394                         }
2395                 } elseif ( '' != $q['attachment'] ) {
2396                         $q['attachment'] = sanitize_title_for_query( wp_basename( $q['attachment'] ) );
2397                         $q['name'] = $q['attachment'];
2398                         $where .= " AND $wpdb->posts.post_name = '" . $q['attachment'] . "'";
2399                 }
2400
2401
2402                 if ( intval($q['comments_popup']) )
2403                         $q['p'] = absint($q['comments_popup']);
2404
2405                 // If an attachment is requested by number, let it supersede any post number.
2406                 if ( $q['attachment_id'] )
2407                         $q['p'] = absint($q['attachment_id']);
2408
2409                 // If a post number is specified, load that post
2410                 if ( $q['p'] ) {
2411                         $where .= " AND {$wpdb->posts}.ID = " . $q['p'];
2412                 } elseif ( $q['post__in'] ) {
2413                         $post__in = implode(',', array_map( 'absint', $q['post__in'] ));
2414                         $where .= " AND {$wpdb->posts}.ID IN ($post__in)";
2415                 } elseif ( $q['post__not_in'] ) {
2416                         $post__not_in = implode(',',  array_map( 'absint', $q['post__not_in'] ));
2417                         $where .= " AND {$wpdb->posts}.ID NOT IN ($post__not_in)";
2418                 }
2419
2420                 if ( is_numeric( $q['post_parent'] ) ) {
2421                         $where .= $wpdb->prepare( " AND $wpdb->posts.post_parent = %d ", $q['post_parent'] );
2422                 } elseif ( $q['post_parent__in'] ) {
2423                         $post_parent__in = implode( ',', array_map( 'absint', $q['post_parent__in'] ) );
2424                         $where .= " AND {$wpdb->posts}.post_parent IN ($post_parent__in)";
2425                 } elseif ( $q['post_parent__not_in'] ) {
2426                         $post_parent__not_in = implode( ',',  array_map( 'absint', $q['post_parent__not_in'] ) );
2427                         $where .= " AND {$wpdb->posts}.post_parent NOT IN ($post_parent__not_in)";
2428                 }
2429
2430                 if ( $q['page_id'] ) {
2431                         if  ( ('page' != get_option('show_on_front') ) || ( $q['page_id'] != get_option('page_for_posts') ) ) {
2432                                 $q['p'] = $q['page_id'];
2433                                 $where = " AND {$wpdb->posts}.ID = " . $q['page_id'];
2434                         }
2435                 }
2436
2437                 // If a search pattern is specified, load the posts that match.
2438                 if ( ! empty( $q['s'] ) )
2439                         $search = $this->parse_search( $q );
2440
2441                 /**
2442                  * Filter the search SQL that is used in the WHERE clause of WP_Query.
2443                  *
2444                  * @since 3.0.0
2445                  *
2446                  * @param string   $search Search SQL for WHERE clause.
2447                  * @param WP_Query $this   The current WP_Query object.
2448                  */
2449                 $search = apply_filters_ref_array( 'posts_search', array( $search, &$this ) );
2450
2451                 // Taxonomies
2452                 if ( !$this->is_singular ) {
2453                         $this->parse_tax_query( $q );
2454
2455                         $clauses = $this->tax_query->get_sql( $wpdb->posts, 'ID' );
2456
2457                         $join .= $clauses['join'];
2458                         $where .= $clauses['where'];
2459                 }
2460
2461                 if ( $this->is_tax ) {
2462                         if ( empty($post_type) ) {
2463                                 // Do a fully inclusive search for currently registered post types of queried taxonomies
2464                                 $post_type = array();
2465                                 $taxonomies = wp_list_pluck( $this->tax_query->queries, 'taxonomy' );
2466                                 foreach ( get_post_types( array( 'exclude_from_search' => false ) ) as $pt ) {
2467                                         $object_taxonomies = $pt === 'attachment' ? get_taxonomies_for_attachments() : get_object_taxonomies( $pt );
2468                                         if ( array_intersect( $taxonomies, $object_taxonomies ) )
2469                                                 $post_type[] = $pt;
2470                                 }
2471                                 if ( ! $post_type )
2472                                         $post_type = 'any';
2473                                 elseif ( count( $post_type ) == 1 )
2474                                         $post_type = $post_type[0];
2475
2476                                 $post_status_join = true;
2477                         } elseif ( in_array('attachment', (array) $post_type) ) {
2478                                 $post_status_join = true;
2479                         }
2480                 }
2481
2482                 // Back-compat
2483                 if ( !empty($this->tax_query->queries) ) {
2484                         $tax_query_in_and = wp_list_filter( $this->tax_query->queries, array( 'operator' => 'NOT IN' ), 'NOT' );
2485                         if ( !empty( $tax_query_in_and ) ) {
2486                                 if ( !isset( $q['taxonomy'] ) ) {
2487                                         foreach ( $tax_query_in_and as $a_tax_query ) {
2488                                                 if ( !in_array( $a_tax_query['taxonomy'], array( 'category', 'post_tag' ) ) ) {
2489                                                         $q['taxonomy'] = $a_tax_query['taxonomy'];
2490                                                         if ( 'slug' == $a_tax_query['field'] )
2491                                                                 $q['term'] = $a_tax_query['terms'][0];
2492                                                         else
2493                                                                 $q['term_id'] = $a_tax_query['terms'][0];
2494
2495                                                         break;
2496                                                 }
2497                                         }
2498                                 }
2499
2500                                 $cat_query = wp_list_filter( $tax_query_in_and, array( 'taxonomy' => 'category' ) );
2501                                 if ( ! empty( $cat_query ) ) {
2502                                         $cat_query = reset( $cat_query );
2503
2504                                         if ( ! empty( $cat_query['terms'][0] ) ) {
2505                                                 $the_cat = get_term_by( $cat_query['field'], $cat_query['terms'][0], 'category' );
2506                                                 if ( $the_cat ) {
2507                                                         $this->set( 'cat', $the_cat->term_id );
2508                                                         $this->set( 'category_name', $the_cat->slug );
2509                                                 }
2510                                                 unset( $the_cat );
2511                                         }
2512                                 }
2513                                 unset( $cat_query );
2514
2515                                 $tag_query = wp_list_filter( $tax_query_in_and, array( 'taxonomy' => 'post_tag' ) );
2516                                 if ( ! empty( $tag_query ) ) {
2517                                         $tag_query = reset( $tag_query );
2518
2519                                         if ( ! empty( $tag_query['terms'][0] ) ) {
2520                                                 $the_tag = get_term_by( $tag_query['field'], $tag_query['terms'][0], 'post_tag' );
2521                                                 if ( $the_tag )
2522                                                         $this->set( 'tag_id', $the_tag->term_id );
2523                                                 unset( $the_tag );
2524                                         }
2525                                 }
2526                                 unset( $tag_query );
2527                         }
2528                 }
2529
2530                 if ( !empty( $this->tax_query->queries ) || !empty( $this->meta_query->queries ) ) {
2531                         $groupby = "{$wpdb->posts}.ID";
2532                 }
2533
2534                 // Author/user stuff
2535
2536                 if ( ! empty( $q['author'] ) && $q['author'] != '0' ) {
2537                         $q['author'] = addslashes_gpc( '' . urldecode( $q['author'] ) );
2538                         $authors = array_unique( array_map( 'intval', preg_split( '/[,\s]+/', $q['author'] ) ) );
2539                         foreach ( $authors as $author ) {
2540                                 $key = $author > 0 ? 'author__in' : 'author__not_in';
2541                                 $q[$key][] = abs( $author );
2542                         }
2543                         $q['author'] = implode( ',', $authors );
2544                 }
2545
2546                 if ( ! empty( $q['author__not_in'] ) ) {
2547                         $author__not_in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__not_in'] ) ) );
2548                         $where .= " AND {$wpdb->posts}.post_author NOT IN ($author__not_in) ";
2549                 } elseif ( ! empty( $q['author__in'] ) ) {
2550                         $author__in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__in'] ) ) );
2551                         $where .= " AND {$wpdb->posts}.post_author IN ($author__in) ";
2552                 }
2553
2554                 // Author stuff for nice URLs
2555
2556                 if ( '' != $q['author_name'] ) {
2557                         if ( strpos($q['author_name'], '/') !== false ) {
2558                                 $q['author_name'] = explode('/', $q['author_name']);
2559                                 if ( $q['author_name'][ count($q['author_name'])-1 ] ) {
2560                                         $q['author_name'] = $q['author_name'][count($q['author_name'])-1]; // no trailing slash
2561                                 } else {
2562                                         $q['author_name'] = $q['author_name'][count($q['author_name'])-2]; // there was a trailing slash
2563                                 }
2564                         }
2565                         $q['author_name'] = sanitize_title_for_query( $q['author_name'] );
2566                         $q['author'] = get_user_by('slug', $q['author_name']);
2567                         if ( $q['author'] )
2568                                 $q['author'] = $q['author']->ID;
2569                         $whichauthor .= " AND ($wpdb->posts.post_author = " . absint($q['author']) . ')';
2570                 }
2571
2572                 // MIME-Type stuff for attachment browsing
2573
2574                 if ( isset( $q['post_mime_type'] ) && '' != $q['post_mime_type'] )
2575                         $whichmimetype = wp_post_mime_type_where( $q['post_mime_type'], $wpdb->posts );
2576
2577                 $where .= $search . $whichauthor . $whichmimetype;
2578
2579                 if ( empty($q['order']) || ((strtoupper($q['order']) != 'ASC') && (strtoupper($q['order']) != 'DESC')) )
2580                         $q['order'] = 'DESC';
2581
2582                 // Order by
2583                 if ( empty($q['orderby']) ) {
2584                         $orderby = "$wpdb->posts.post_date " . $q['order'];
2585                 } elseif ( 'none' == $q['orderby'] ) {
2586                         $orderby = '';
2587                 } elseif ( $q['orderby'] == 'post__in' && ! empty( $post__in ) ) {
2588                         $orderby = "FIELD( {$wpdb->posts}.ID, $post__in )";
2589                 } elseif ( $q['orderby'] == 'post_parent__in' && ! empty( $post_parent__in ) ) {
2590                         $orderby = "FIELD( {$wpdb->posts}.post_parent, $post_parent__in )";
2591                 } else {
2592                         // Used to filter values
2593                         $allowed_keys = array('name', 'author', 'date', 'title', 'modified', 'menu_order', 'parent', 'ID', 'rand', 'comment_count');
2594                         if ( !empty($q['meta_key']) ) {
2595                                 $allowed_keys[] = $q['meta_key'];
2596                                 $allowed_keys[] = 'meta_value';
2597                                 $allowed_keys[] = 'meta_value_num';
2598                         }
2599                         $q['orderby'] = urldecode($q['orderby']);
2600                         $q['orderby'] = addslashes_gpc($q['orderby']);
2601
2602                         $orderby_array = array();
2603                         foreach ( explode( ' ', $q['orderby'] ) as $i => $orderby ) {
2604                                 // Only allow certain values for safety
2605                                 if ( ! in_array($orderby, $allowed_keys) )
2606                                         continue;
2607
2608                                 switch ( $orderby ) {
2609                                         case 'menu_order':
2610                                                 $orderby = "$wpdb->posts.menu_order";
2611                                                 break;
2612                                         case 'ID':
2613                                                 $orderby = "$wpdb->posts.ID";
2614                                                 break;
2615                                         case 'rand':
2616                                                 $orderby = 'RAND()';
2617                                                 break;
2618                                         case $q['meta_key']:
2619                                         case 'meta_value':
2620                                                 if ( isset( $q['meta_type'] ) ) {
2621                                                         $meta_type = $this->meta_query->get_cast_for_type( $q['meta_type'] );
2622                                                         $orderby = "CAST($wpdb->postmeta.meta_value AS {$meta_type})";
2623                                                 } else {
2624                                                         $orderby = "$wpdb->postmeta.meta_value";
2625                                                 }
2626                                                 break;
2627                                         case 'meta_value_num':
2628                                                 $orderby = "$wpdb->postmeta.meta_value+0";
2629                                                 break;
2630                                         case 'comment_count':
2631                                                 $orderby = "$wpdb->posts.comment_count";
2632                                                 break;
2633                                         default:
2634                                                 $orderby = "$wpdb->posts.post_" . $orderby;
2635                                 }
2636
2637                                 $orderby_array[] = $orderby;
2638                         }
2639                         $orderby = implode( ',', $orderby_array );
2640
2641                         if ( empty( $orderby ) )
2642                                 $orderby = "$wpdb->posts.post_date ".$q['order'];
2643                         else
2644                                 $orderby .= " {$q['order']}";
2645                 }
2646
2647                 // Order search results by relevance only when another "orderby" is not specified in the query.
2648                 if ( ! empty( $q['s'] ) ) {
2649                         $search_orderby = '';
2650                         if ( ! empty( $q['search_orderby_title'] ) && ( empty( $q['orderby'] ) && ! $this->is_feed ) || ( isset( $q['orderby'] ) && 'relevance' === $q['orderby'] ) )
2651                                 $search_orderby = $this->parse_search_order( $q );
2652
2653                         /**
2654                          * Filter the ORDER BY used when ordering search results.
2655                          *
2656                          * @since 3.7.0
2657                          *
2658                          * @param string   $search_orderby The ORDER BY clause.
2659                          * @param WP_Query $this           The current WP_Query instance.
2660                          */
2661                         $search_orderby = apply_filters( 'posts_search_orderby', $search_orderby, $this );
2662                         if ( $search_orderby )
2663                                 $orderby = $orderby ? $search_orderby . ', ' . $orderby : $search_orderby;
2664                 }
2665
2666                 if ( is_array( $post_type ) && count( $post_type ) > 1 ) {
2667                         $post_type_cap = 'multiple_post_type';
2668                 } else {
2669                         if ( is_array( $post_type ) )
2670                                 $post_type = reset( $post_type );
2671                         $post_type_object = get_post_type_object( $post_type );
2672                         if ( empty( $post_type_object ) )
2673                                 $post_type_cap = $post_type;
2674                 }
2675
2676                 if ( 'any' == $post_type ) {
2677                         $in_search_post_types = get_post_types( array('exclude_from_search' => false) );
2678                         if ( empty( $in_search_post_types ) )
2679                                 $where .= ' AND 1=0 ';
2680                         else
2681                                 $where .= " AND $wpdb->posts.post_type IN ('" . join("', '", $in_search_post_types ) . "')";
2682                 } elseif ( !empty( $post_type ) && is_array( $post_type ) ) {
2683                         $where .= " AND $wpdb->posts.post_type IN ('" . join("', '", $post_type) . "')";
2684                 } elseif ( ! empty( $post_type ) ) {
2685                         $where .= " AND $wpdb->posts.post_type = '$post_type'";
2686                         $post_type_object = get_post_type_object ( $post_type );
2687                 } elseif ( $this->is_attachment ) {
2688                         $where .= " AND $wpdb->posts.post_type = 'attachment'";
2689                         $post_type_object = get_post_type_object ( 'attachment' );
2690                 } elseif ( $this->is_page ) {
2691                         $where .= " AND $wpdb->posts.post_type = 'page'";
2692                         $post_type_object = get_post_type_object ( 'page' );
2693                 } else {
2694                         $where .= " AND $wpdb->posts.post_type = 'post'";
2695                         $post_type_object = get_post_type_object ( 'post' );
2696                 }
2697
2698                 $edit_cap = 'edit_post';
2699                 $read_cap = 'read_post';
2700
2701                 if ( ! empty( $post_type_object ) ) {
2702                         $edit_others_cap = $post_type_object->cap->edit_others_posts;
2703                         $read_private_cap = $post_type_object->cap->read_private_posts;
2704                 } else {
2705                         $edit_others_cap = 'edit_others_' . $post_type_cap . 's';
2706                         $read_private_cap = 'read_private_' . $post_type_cap . 's';
2707                 }
2708
2709                 $user_id = get_current_user_id();
2710
2711                 if ( ! empty( $q['post_status'] ) ) {
2712                         $statuswheres = array();
2713                         $q_status = $q['post_status'];
2714                         if ( ! is_array( $q_status ) )
2715                                 $q_status = explode(',', $q_status);
2716                         $r_status = array();
2717                         $p_status = array();
2718                         $e_status = array();
2719                         if ( in_array('any', $q_status) ) {
2720                                 foreach ( get_post_stati( array('exclude_from_search' => true) ) as $status )
2721                                         $e_status[] = "$wpdb->posts.post_status <> '$status'";
2722                         } else {
2723                                 foreach ( get_post_stati() as $status ) {
2724                                         if ( in_array( $status, $q_status ) ) {
2725                                                 if ( 'private' == $status )
2726                                                         $p_status[] = "$wpdb->posts.post_status = '$status'";
2727                                                 else
2728                                                         $r_status[] = "$wpdb->posts.post_status = '$status'";
2729                                         }
2730                                 }
2731                         }
2732
2733                         if ( empty($q['perm'] ) || 'readable' != $q['perm'] ) {
2734                                 $r_status = array_merge($r_status, $p_status);
2735                                 unset($p_status);
2736                         }
2737
2738                         if ( !empty($e_status) ) {
2739                                 $statuswheres[] = "(" . join( ' AND ', $e_status ) . ")";
2740                         }
2741                         if ( !empty($r_status) ) {
2742                                 if ( !empty($q['perm'] ) && 'editable' == $q['perm'] && !current_user_can($edit_others_cap) )
2743                                         $statuswheres[] = "($wpdb->posts.post_author = $user_id " . "AND (" . join( ' OR ', $r_status ) . "))";
2744                                 else
2745                                         $statuswheres[] = "(" . join( ' OR ', $r_status ) . ")";
2746                         }
2747                         if ( !empty($p_status) ) {
2748                                 if ( !empty($q['perm'] ) && 'readable' == $q['perm'] && !current_user_can($read_private_cap) )
2749                                         $statuswheres[] = "($wpdb->posts.post_author = $user_id " . "AND (" . join( ' OR ', $p_status ) . "))";
2750                                 else
2751                                         $statuswheres[] = "(" . join( ' OR ', $p_status ) . ")";
2752                         }
2753                         if ( $post_status_join ) {
2754                                 $join .= " LEFT JOIN $wpdb->posts AS p2 ON ($wpdb->posts.post_parent = p2.ID) ";
2755                                 foreach ( $statuswheres as $index => $statuswhere )
2756                                         $statuswheres[$index] = "($statuswhere OR ($wpdb->posts.post_status = 'inherit' AND " . str_replace($wpdb->posts, 'p2', $statuswhere) . "))";
2757                         }
2758                         foreach ( $statuswheres as $statuswhere )
2759                                 $where .= " AND $statuswhere";
2760                 } elseif ( !$this->is_singular ) {
2761                         $where .= " AND ($wpdb->posts.post_status = 'publish'";
2762
2763                         // Add public states.
2764                         $public_states = get_post_stati( array('public' => true) );
2765                         foreach ( (array) $public_states as $state ) {
2766                                 if ( 'publish' == $state ) // Publish is hard-coded above.
2767                                         continue;
2768                                 $where .= " OR $wpdb->posts.post_status = '$state'";
2769                         }
2770
2771                         if ( $this->is_admin ) {
2772                                 // Add protected states that should show in the admin all list.
2773                                 $admin_all_states = get_post_stati( array('protected' => true, 'show_in_admin_all_list' => true) );
2774                                 foreach ( (array) $admin_all_states as $state )
2775                                         $where .= " OR $wpdb->posts.post_status = '$state'";
2776                         }
2777
2778                         if ( is_user_logged_in() ) {
2779                                 // Add private states that are limited to viewing by the author of a post or someone who has caps to read private states.
2780                                 $private_states = get_post_stati( array('private' => true) );
2781                                 foreach ( (array) $private_states as $state )
2782                                         $where .= current_user_can( $read_private_cap ) ? " OR $wpdb->posts.post_status = '$state'" : " OR $wpdb->posts.post_author = $user_id AND $wpdb->posts.post_status = '$state'";
2783                         }
2784
2785                         $where .= ')';
2786                 }
2787
2788                 if ( !empty( $this->meta_query->queries ) ) {
2789                         $clauses = $this->meta_query->get_sql( 'post', $wpdb->posts, 'ID', $this );
2790                         $join .= $clauses['join'];
2791                         $where .= $clauses['where'];
2792                 }
2793
2794                 // Apply filters on where and join prior to paging so that any
2795                 // manipulations to them are reflected in the paging by day queries.
2796                 if ( !$q['suppress_filters'] ) {
2797                         $where = apply_filters_ref_array('posts_where', array( $where, &$this ) );
2798                         $join = apply_filters_ref_array('posts_join', array( $join, &$this ) );
2799                 }
2800
2801                 // Paging
2802                 if ( empty($q['nopaging']) && !$this->is_singular ) {
2803                         $page = absint($q['paged']);
2804                         if ( !$page )
2805                                 $page = 1;
2806
2807                         if ( empty($q['offset']) ) {
2808                                 $pgstrt = ($page - 1) * $q['posts_per_page'] . ', ';
2809                         } else { // we're ignoring $page and using 'offset'
2810                                 $q['offset'] = absint($q['offset']);
2811                                 $pgstrt = $q['offset'] . ', ';
2812                         }
2813                         $limits = 'LIMIT ' . $pgstrt . $q['posts_per_page'];
2814                 }
2815
2816                 // Comments feeds
2817                 if ( $this->is_comment_feed && ( $this->is_archive || $this->is_search || !$this->is_singular ) ) {
2818                         if ( $this->is_archive || $this->is_search ) {
2819                                 $cjoin = "JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID = $wpdb->posts.ID) $join ";
2820                                 $cwhere = "WHERE comment_approved = '1' $where";
2821                                 $cgroupby = "$wpdb->comments.comment_id";
2822                         } else { // Other non singular e.g. front
2823                                 $cjoin = "JOIN $wpdb->posts ON ( $wpdb->comments.comment_post_ID = $wpdb->posts.ID )";
2824                                 $cwhere = "WHERE post_status = 'publish' AND comment_approved = '1'";
2825                                 $cgroupby = '';
2826                         }
2827
2828                         if ( !$q['suppress_filters'] ) {
2829                                 $cjoin = apply_filters_ref_array('comment_feed_join', array( $cjoin, &$this ) );
2830                                 $cwhere = apply_filters_ref_array('comment_feed_where', array( $cwhere, &$this ) );
2831                                 $cgroupby = apply_filters_ref_array('comment_feed_groupby', array( $cgroupby, &$this ) );
2832                                 $corderby = apply_filters_ref_array('comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );
2833                                 $climits = apply_filters_ref_array('comment_feed_limits', array( 'LIMIT ' . get_option('posts_per_rss'), &$this ) );
2834                         }
2835                         $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
2836                         $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';
2837
2838                         $this->comments = (array) $wpdb->get_results("SELECT $distinct $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere $cgroupby $corderby $climits");
2839                         $this->comment_count = count($this->comments);
2840
2841                         $post_ids = array();
2842
2843                         foreach ( $this->comments as $comment )
2844                                 $post_ids[] = (int) $comment->comment_post_ID;
2845
2846                         $post_ids = join(',', $post_ids);
2847                         $join = '';
2848                         if ( $post_ids )
2849                                 $where = "AND $wpdb->posts.ID IN ($post_ids) ";
2850                         else
2851                                 $where = "AND 0";
2852                 }
2853
2854                 $pieces = array( 'where', 'groupby', 'join', 'orderby', 'distinct', 'fields', 'limits' );
2855
2856                 // Apply post-paging filters on where and join. Only plugins that
2857                 // manipulate paging queries should use these hooks.
2858                 if ( !$q['suppress_filters'] ) {
2859                         $where          = apply_filters_ref_array( 'posts_where_paged', array( $where, &$this ) );
2860                         $groupby        = apply_filters_ref_array( 'posts_groupby',             array( $groupby, &$this ) );
2861                         $join           = apply_filters_ref_array( 'posts_join_paged',  array( $join, &$this ) );
2862                         $orderby        = apply_filters_ref_array( 'posts_orderby',             array( $orderby, &$this ) );
2863                         $distinct       = apply_filters_ref_array( 'posts_distinct',    array( $distinct, &$this ) );
2864                         $limits         = apply_filters_ref_array( 'post_limits',               array( $limits, &$this ) );
2865                         $fields         = apply_filters_ref_array( 'posts_fields',              array( $fields, &$this ) );
2866
2867                         // Filter all clauses at once, for convenience
2868                         $clauses = (array) apply_filters_ref_array( 'posts_clauses', array( compact( $pieces ), &$this ) );
2869                         foreach ( $pieces as $piece )
2870                                 $$piece = isset( $clauses[ $piece ] ) ? $clauses[ $piece ] : '';
2871                 }
2872
2873                 // Announce current selection parameters. For use by caching plugins.
2874                 do_action( 'posts_selection', $where . $groupby . $orderby . $limits . $join );
2875
2876                 // Filter again for the benefit of caching plugins. Regular plugins should use the hooks above.
2877                 if ( !$q['suppress_filters'] ) {
2878                         $where          = apply_filters_ref_array( 'posts_where_request',               array( $where, &$this ) );
2879                         $groupby        = apply_filters_ref_array( 'posts_groupby_request',             array( $groupby, &$this ) );
2880                         $join           = apply_filters_ref_array( 'posts_join_request',                array( $join, &$this ) );
2881                         $orderby        = apply_filters_ref_array( 'posts_orderby_request',             array( $orderby, &$this ) );
2882                         $distinct       = apply_filters_ref_array( 'posts_distinct_request',    array( $distinct, &$this ) );
2883                         $fields         = apply_filters_ref_array( 'posts_fields_request',              array( $fields, &$this ) );
2884                         $limits         = apply_filters_ref_array( 'post_limits_request',               array( $limits, &$this ) );
2885
2886                         // Filter all clauses at once, for convenience
2887                         $clauses = (array) apply_filters_ref_array( 'posts_clauses_request', array( compact( $pieces ), &$this ) );
2888                         foreach ( $pieces as $piece )
2889                                 $$piece = isset( $clauses[ $piece ] ) ? $clauses[ $piece ] : '';
2890                 }
2891
2892                 if ( ! empty($groupby) )
2893                         $groupby = 'GROUP BY ' . $groupby;
2894                 if ( !empty( $orderby ) )
2895                         $orderby = 'ORDER BY ' . $orderby;
2896
2897                 $found_rows = '';
2898                 if ( !$q['no_found_rows'] && !empty($limits) )
2899                         $found_rows = 'SQL_CALC_FOUND_ROWS';
2900
2901                 $this->request = $old_request = "SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
2902
2903                 if ( !$q['suppress_filters'] ) {
2904                         $this->request = apply_filters_ref_array( 'posts_request', array( $this->request, &$this ) );
2905                 }
2906
2907                 if ( 'ids' == $q['fields'] ) {
2908                         $this->posts = $wpdb->get_col( $this->request );
2909                         $this->post_count = count( $this->posts );
2910                         $this->set_found_posts( $q, $limits );
2911
2912                         return $this->posts;
2913                 }
2914
2915                 if ( 'id=>parent' == $q['fields'] ) {
2916                         $this->posts = $wpdb->get_results( $this->request );
2917                         $this->post_count = count( $this->posts );
2918                         $this->set_found_posts( $q, $limits );
2919
2920                         $r = array();
2921                         foreach ( $this->posts as $post )
2922                                 $r[ $post->ID ] = $post->post_parent;
2923
2924                         return $r;
2925                 }
2926
2927                 $split_the_query = ( $old_request == $this->request && "$wpdb->posts.*" == $fields && !empty( $limits ) && $q['posts_per_page'] < 500 );
2928                 $split_the_query = apply_filters( 'split_the_query', $split_the_query, $this );
2929
2930                 if ( $split_the_query ) {
2931                         // First get the IDs and then fill in the objects
2932
2933                         $this->request = "SELECT $found_rows $distinct $wpdb->posts.ID FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
2934
2935                         $this->request = apply_filters( 'posts_request_ids', $this->request, $this );
2936
2937                         $ids = $wpdb->get_col( $this->request );
2938
2939                         if ( $ids ) {
2940                                 $this->posts = $ids;
2941                                 $this->set_found_posts( $q, $limits );
2942                                 _prime_post_caches( $ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
2943                         } else {
2944                                 $this->posts = array();
2945                         }
2946                 } else {
2947                         $this->posts = $wpdb->get_results( $this->request );
2948                         $this->set_found_posts( $q, $limits );
2949                 }
2950
2951                 // Convert to WP_Post objects
2952                 if ( $this->posts )
2953                         $this->posts = array_map( 'get_post', $this->posts );
2954
2955                 // Raw results filter. Prior to status checks.
2956                 if ( !$q['suppress_filters'] )
2957                         $this->posts = apply_filters_ref_array('posts_results', array( $this->posts, &$this ) );
2958
2959                 if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) {
2960                         $cjoin = apply_filters_ref_array('comment_feed_join', array( '', &$this ) );
2961                         $cwhere = apply_filters_ref_array('comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) );
2962                         $cgroupby = apply_filters_ref_array('comment_feed_groupby', array( '', &$this ) );
2963                         $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
2964                         $corderby = apply_filters_ref_array('comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );
2965                         $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';
2966                         $climits = apply_filters_ref_array('comment_feed_limits', array( 'LIMIT ' . get_option('posts_per_rss'), &$this ) );
2967                         $comments_request = "SELECT $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere $cgroupby $corderby $climits";
2968                         $this->comments = $wpdb->get_results($comments_request);
2969                         $this->comment_count = count($this->comments);
2970                 }
2971
2972                 // Check post status to determine if post should be displayed.
2973                 if ( !empty($this->posts) && ($this->is_single || $this->is_page) ) {
2974                         $status = get_post_status($this->posts[0]);
2975                         $post_status_obj = get_post_status_object($status);
2976                         //$type = get_post_type($this->posts[0]);
2977                         if ( !$post_status_obj->public ) {
2978                                 if ( ! is_user_logged_in() ) {
2979                                         // User must be logged in to view unpublished posts.
2980                                         $this->posts = array();
2981                                 } else {
2982                                         if  ( $post_status_obj->protected ) {
2983                                                 // User must have edit permissions on the draft to preview.
2984                                                 if ( ! current_user_can($edit_cap, $this->posts[0]->ID) ) {
2985                                                         $this->posts = array();
2986                                                 } else {
2987                                                         $this->is_preview = true;
2988                                                         if ( 'future' != $status )
2989                                                                 $this->posts[0]->post_date = current_time('mysql');
2990                                                 }
2991                                         } elseif ( $post_status_obj->private ) {
2992                                                 if ( ! current_user_can($read_cap, $this->posts[0]->ID) )
2993                                                         $this->posts = array();
2994                                         } else {
2995                                                 $this->posts = array();
2996                                         }
2997                                 }
2998                         }
2999
3000                         if ( $this->is_preview && $this->posts && current_user_can( $edit_cap, $this->posts[0]->ID ) )
3001                                 $this->posts[0] = get_post( apply_filters_ref_array( 'the_preview', array( $this->posts[0], &$this ) ) );
3002                 }
3003
3004                 // Put sticky posts at the top of the posts array
3005                 $sticky_posts = get_option('sticky_posts');
3006                 if ( $this->is_home && $page <= 1 && is_array($sticky_posts) && !empty($sticky_posts) && !$q['ignore_sticky_posts'] ) {
3007                         $num_posts = count($this->posts);
3008                         $sticky_offset = 0;
3009                         // Loop over posts and relocate stickies to the front.
3010                         for ( $i = 0; $i < $num_posts; $i++ ) {
3011                                 if ( in_array($this->posts[$i]->ID, $sticky_posts) ) {
3012                                         $sticky_post = $this->posts[$i];
3013                                         // Remove sticky from current position
3014                                         array_splice($this->posts, $i, 1);
3015                                         // Move to front, after other stickies
3016                                         array_splice($this->posts, $sticky_offset, 0, array($sticky_post));
3017                                         // Increment the sticky offset. The next sticky will be placed at this offset.
3018                                         $sticky_offset++;
3019                                         // Remove post from sticky posts array
3020                                         $offset = array_search($sticky_post->ID, $sticky_posts);
3021                                         unset( $sticky_posts[$offset] );
3022                                 }
3023                         }
3024
3025                         // If any posts have been excluded specifically, Ignore those that are sticky.
3026                         if ( !empty($sticky_posts) && !empty($q['post__not_in']) )
3027                                 $sticky_posts = array_diff($sticky_posts, $q['post__not_in']);
3028
3029                         // Fetch sticky posts that weren't in the query results
3030                         if ( !empty($sticky_posts) ) {
3031                                 $stickies = get_posts( array(
3032                                         'post__in' => $sticky_posts,
3033                                         'post_type' => $post_type,
3034                                         'post_status' => 'publish',
3035                                         'nopaging' => true
3036                                 ) );
3037
3038                                 foreach ( $stickies as $sticky_post ) {
3039                                         array_splice( $this->posts, $sticky_offset, 0, array( $sticky_post ) );
3040                                         $sticky_offset++;
3041                                 }
3042                         }
3043                 }
3044
3045                 if ( !$q['suppress_filters'] )
3046                         $this->posts = apply_filters_ref_array('the_posts', array( $this->posts, &$this ) );
3047
3048                 // Ensure that any posts added/modified via one of the filters above are
3049                 // of the type WP_Post and are filtered.
3050                 if ( $this->posts ) {
3051                         $this->post_count = count( $this->posts );
3052
3053                         $this->posts = array_map( 'get_post', $this->posts );
3054
3055                         if ( $q['cache_results'] )
3056                                 update_post_caches($this->posts, $post_type, $q['update_post_term_cache'], $q['update_post_meta_cache']);
3057
3058                         $this->post = reset( $this->posts );
3059                 } else {
3060                         $this->post_count = 0;
3061                         $this->posts = array();
3062                 }
3063
3064                 return $this->posts;
3065         }
3066
3067         /**
3068          * Set up the amount of found posts and the number of pages (if limit clause was used)
3069          * for the current query.
3070          *
3071          * @since 3.5.0
3072          * @access private
3073          */
3074         function set_found_posts( $q, $limits ) {
3075                 global $wpdb;
3076
3077                 // Bail if posts is an empty array. Continue if posts is an empty string,
3078                 // null, or false to accommodate caching plugins that fill posts later.
3079                 if ( $q['no_found_rows'] || ( is_array( $this->posts ) && ! $this->posts ) )
3080                         return;
3081
3082                 if ( ! empty( $limits ) )
3083                         $this->found_posts = $wpdb->get_var( apply_filters_ref_array( 'found_posts_query', array( 'SELECT FOUND_ROWS()', &$this ) ) );
3084                 else
3085                         $this->found_posts = count( $this->posts );
3086
3087                 $this->found_posts = apply_filters_ref_array( 'found_posts', array( $this->found_posts, &$this ) );
3088
3089                 if ( ! empty( $limits ) )
3090                         $this->max_num_pages = ceil( $this->found_posts / $q['posts_per_page'] );
3091         }
3092
3093         /**
3094          * Set up the next post and iterate current post index.
3095          *
3096          * @since 1.5.0
3097          * @access public
3098          *
3099          * @return WP_Post Next post.
3100          */
3101         function next_post() {
3102
3103                 $this->current_post++;
3104
3105                 $this->post = $this->posts[$this->current_post];
3106                 return $this->post;
3107         }
3108
3109         /**
3110          * Sets up the current post.
3111          *
3112          * Retrieves the next post, sets up the post, sets the 'in the loop'
3113          * property to true.
3114          *
3115          * @since 1.5.0
3116          * @access public
3117          * @uses $post
3118          * @uses do_action_ref_array() Calls 'loop_start' if loop has just started
3119          */
3120         function the_post() {
3121                 global $post;
3122                 $this->in_the_loop = true;
3123
3124                 if ( $this->current_post == -1 ) // loop has just started
3125                         do_action_ref_array('loop_start', array(&$this));
3126
3127                 $post = $this->next_post();
3128                 setup_postdata($post);
3129         }
3130
3131         /**
3132          * Whether there are more posts available in the loop.
3133          *
3134          * Calls action 'loop_end', when the loop is complete.
3135          *
3136          * @since 1.5.0
3137          * @access public
3138          * @uses do_action_ref_array() Calls 'loop_end' if loop is ended
3139          *
3140          * @return bool True if posts are available, false if end of loop.
3141          */
3142         function have_posts() {
3143                 if ( $this->current_post + 1 < $this->post_count ) {
3144                         return true;
3145                 } elseif ( $this->current_post + 1 == $this->post_count && $this->post_count > 0 ) {
3146                         do_action_ref_array('loop_end', array(&$this));
3147                         // Do some cleaning up after the loop
3148                         $this->rewind_posts();
3149                 }
3150
3151                 $this->in_the_loop = false;
3152                 return false;
3153         }
3154
3155         /**
3156          * Rewind the posts and reset post index.
3157          *
3158          * @since 1.5.0
3159          * @access public
3160          */
3161         function rewind_posts() {
3162                 $this->current_post = -1;
3163                 if ( $this->post_count > 0 ) {
3164                         $this->post = $this->posts[0];
3165                 }
3166         }
3167
3168         /**
3169          * Iterate current comment index and return comment object.
3170          *
3171          * @since 2.2.0
3172          * @access public
3173          *
3174          * @return object Comment object.
3175          */
3176         function next_comment() {
3177                 $this->current_comment++;
3178
3179                 $this->comment = $this->comments[$this->current_comment];
3180                 return $this->comment;
3181         }
3182
3183         /**
3184          * Sets up the current comment.
3185          *
3186          * @since 2.2.0
3187          * @access public
3188          * @global object $comment Current comment.
3189          * @uses do_action() Calls 'comment_loop_start' hook when first comment is processed.
3190          */
3191         function the_comment() {
3192                 global $comment;
3193
3194                 $comment = $this->next_comment();
3195
3196                 if ( $this->current_comment == 0 ) {
3197                         do_action('comment_loop_start');
3198                 }
3199         }
3200
3201         /**
3202          * Whether there are more comments available.
3203          *
3204          * Automatically rewinds comments when finished.
3205          *
3206          * @since 2.2.0
3207          * @access public
3208          *
3209          * @return bool True, if more comments. False, if no more posts.
3210          */
3211         function have_comments() {
3212                 if ( $this->current_comment + 1 < $this->comment_count ) {
3213                         return true;
3214                 } elseif ( $this->current_comment + 1 == $this->comment_count ) {
3215                         $this->rewind_comments();
3216                 }
3217
3218                 return false;
3219         }
3220
3221         /**
3222          * Rewind the comments, resets the comment index and comment to first.
3223          *
3224          * @since 2.2.0
3225          * @access public
3226          */
3227         function rewind_comments() {
3228                 $this->current_comment = -1;
3229                 if ( $this->comment_count > 0 ) {
3230                         $this->comment = $this->comments[0];
3231                 }
3232         }
3233
3234         /**
3235          * Sets up the WordPress query by parsing query string.
3236          *
3237          * @since 1.5.0
3238          * @access public
3239          *
3240          * @param string $query URL query string.
3241          * @return array List of posts.
3242          */
3243         function query( $query ) {
3244                 $this->init();
3245                 $this->query = $this->query_vars = wp_parse_args( $query );
3246                 return $this->get_posts();
3247         }
3248
3249         /**
3250          * Retrieve queried object.
3251          *
3252          * If queried object is not set, then the queried object will be set from
3253          * the category, tag, taxonomy, posts page, single post, page, or author
3254          * query variable. After it is set up, it will be returned.
3255          *
3256          * @since 1.5.0
3257          * @access public
3258          *
3259          * @return object
3260          */
3261         function get_queried_object() {
3262                 if ( isset($this->queried_object) )
3263                         return $this->queried_object;
3264
3265                 $this->queried_object = null;
3266                 $this->queried_object_id = 0;
3267
3268                 if ( $this->is_category || $this->is_tag || $this->is_tax ) {
3269                         if ( $this->is_category ) {
3270                                 if ( $this->get( 'cat' ) ) {
3271                                         $term = get_term( $this->get( 'cat' ), 'category' );
3272                                 } elseif ( $this->get( 'category_name' ) ) {
3273                                         $term = get_term_by( 'slug', $this->get( 'category_name' ), 'category' );
3274                                 }
3275                         } elseif ( $this->is_tag ) {
3276                                 $term = get_term( $this->get( 'tag_id' ), 'post_tag' );
3277                         } else {
3278                                 $tax_query_in_and = wp_list_filter( $this->tax_query->queries, array( 'operator' => 'NOT IN' ), 'NOT' );
3279                                 $query = reset( $tax_query_in_and );
3280
3281                                 if ( $query['terms'] ) {
3282                                         if ( 'term_id' == $query['field'] ) {
3283                                                 $term = get_term( reset( $query['terms'] ), $query['taxonomy'] );
3284                                         } else {
3285                                                 $term = get_term_by( $query['field'], reset( $query['terms'] ), $query['taxonomy'] );
3286                                         }
3287                                 }
3288                         }
3289
3290                         if ( ! empty( $term ) && ! is_wp_error( $term ) )  {
3291                                 $this->queried_object = $term;
3292                                 $this->queried_object_id = (int) $term->term_id;
3293
3294                                 if ( $this->is_category && 'category' === $this->queried_object->taxonomy )
3295                                         _make_cat_compat( $this->queried_object );
3296                         }
3297                 } elseif ( $this->is_post_type_archive ) {
3298                         $post_type = $this->get( 'post_type' );
3299                         if ( is_array( $post_type ) )
3300                                 $post_type = reset( $post_type );
3301                         $this->queried_object = get_post_type_object( $post_type );
3302                 } elseif ( $this->is_posts_page ) {
3303                         $page_for_posts = get_option('page_for_posts');
3304                         $this->queried_object = get_post( $page_for_posts );
3305                         $this->queried_object_id = (int) $this->queried_object->ID;
3306                 } elseif ( $this->is_singular && !is_null($this->post) ) {
3307                         $this->queried_object = $this->post;
3308                         $this->queried_object_id = (int) $this->post->ID;
3309                 } elseif ( $this->is_author ) {
3310                         $this->queried_object_id = (int) $this->get('author');
3311                         $this->queried_object = get_userdata( $this->queried_object_id );
3312                 }
3313
3314                 return $this->queried_object;
3315         }
3316
3317         /**
3318          * Retrieve ID of the current queried object.
3319          *
3320          * @since 1.5.0
3321          * @access public
3322          *
3323          * @return int
3324          */
3325         function get_queried_object_id() {
3326                 $this->get_queried_object();
3327
3328                 if ( isset($this->queried_object_id) ) {
3329                         return $this->queried_object_id;
3330                 }
3331
3332                 return 0;
3333         }
3334
3335         /**
3336          * Constructor.
3337          *
3338          * Sets up the WordPress query, if parameter is not empty.
3339          *
3340          * @since 1.5.0
3341          * @access public
3342          *
3343          * @param string $query URL query string.
3344          * @return WP_Query
3345          */
3346         function __construct($query = '') {
3347                 if ( ! empty($query) ) {
3348                         $this->query($query);
3349                 }
3350         }
3351
3352         /**
3353          * Is the query for an existing archive page?
3354          *
3355          * Month, Year, Category, Author, Post Type archive...
3356          *
3357          * @since 3.1.0
3358          *
3359          * @return bool
3360          */
3361         function is_archive() {
3362                 return (bool) $this->is_archive;
3363         }
3364
3365         /**
3366          * Is the query for an existing post type archive page?
3367          *
3368          * @since 3.1.0
3369          *
3370          * @param mixed $post_types Optional. Post type or array of posts types to check against.
3371          * @return bool
3372          */
3373         function is_post_type_archive( $post_types = '' ) {
3374                 if ( empty( $post_types ) || ! $this->is_post_type_archive )
3375                         return (bool) $this->is_post_type_archive;
3376
3377                 $post_type = $this->get( 'post_type' );
3378                 if ( is_array( $post_type ) )
3379                         $post_type = reset( $post_type );
3380                 $post_type_object = get_post_type_object( $post_type );
3381
3382                 return in_array( $post_type_object->name, (array) $post_types );
3383         }
3384
3385         /**
3386          * Is the query for an existing attachment page?
3387          *
3388          * @since 3.1.0
3389          *
3390          * @return bool
3391          */
3392         function is_attachment() {
3393                 return (bool) $this->is_attachment;
3394         }
3395
3396         /**
3397          * Is the query for an existing author archive page?
3398          *
3399          * If the $author parameter is specified, this function will additionally
3400          * check if the query is for one of the authors specified.
3401          *
3402          * @since 3.1.0
3403          *
3404          * @param mixed $author Optional. User ID, nickname, nicename, or array of User IDs, nicknames, and nicenames
3405          * @return bool
3406          */
3407         function is_author( $author = '' ) {
3408                 if ( !$this->is_author )
3409                         return false;
3410
3411                 if ( empty($author) )
3412                         return true;
3413
3414                 $author_obj = $this->get_queried_object();
3415
3416                 $author = (array) $author;
3417
3418                 if ( in_array( $author_obj->ID, $author ) )
3419                         return true;
3420                 elseif ( in_array( $author_obj->nickname, $author ) )
3421                         return true;
3422                 elseif ( in_array( $author_obj->user_nicename, $author ) )
3423                         return true;
3424
3425                 return false;
3426         }
3427
3428         /**
3429          * Is the query for an existing category archive page?
3430          *
3431          * If the $category parameter is specified, this function will additionally
3432          * check if the query is for one of the categories specified.
3433          *
3434          * @since 3.1.0
3435          *
3436          * @param mixed $category Optional. Category ID, name, slug, or array of Category IDs, names, and slugs.
3437          * @return bool
3438          */
3439         function is_category( $category = '' ) {
3440                 if ( !$this->is_category )
3441                         return false;
3442
3443                 if ( empty($category) )
3444                         return true;
3445
3446                 $cat_obj = $this->get_queried_object();
3447
3448                 $category = (array) $category;
3449
3450                 if ( in_array( $cat_obj->term_id, $category ) )
3451                         return true;
3452                 elseif ( in_array( $cat_obj->name, $category ) )
3453                         return true;
3454                 elseif ( in_array( $cat_obj->slug, $category ) )
3455                         return true;
3456
3457                 return false;
3458         }
3459
3460         /**
3461          * Is the query for an existing tag archive page?
3462          *
3463          * If the $tag parameter is specified, this function will additionally
3464          * check if the query is for one of the tags specified.
3465          *
3466          * @since 3.1.0
3467          *