Wordpress 2.9
[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 to the user is on. It
6  * also provides functionality to 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  * Set query variable.
32  *
33  * @see WP_Query::set()
34  * @since 2.2.0
35  * @uses $wp_query
36  *
37  * @param string $var Query variable key.
38  * @param mixed $value
39  * @return null
40  */
41 function set_query_var($var, $value) {
42         global $wp_query;
43
44         return $wp_query->set($var, $value);
45 }
46
47 /**
48  * Setup The Loop with query parameters.
49  *
50  * This will override the current WordPress Loop and shouldn't be used more than
51  * once. This must not be used within the WordPress Loop.
52  *
53  * @since 1.5.0
54  * @uses $wp_query
55  *
56  * @param string $query
57  * @return array List of posts
58  */
59 function &query_posts($query) {
60         unset($GLOBALS['wp_query']);
61         $GLOBALS['wp_query'] =& new WP_Query();
62         return $GLOBALS['wp_query']->query($query);
63 }
64
65 /**
66  * Destroy the previous query and setup a new query.
67  *
68  * This should be used after {@link query_posts()} and before another {@link
69  * query_posts()}. This will remove obscure bugs that occur when the previous
70  * wp_query object is not destroyed properly before another is setup.
71  *
72  * @since 2.3.0
73  * @uses $wp_query
74  */
75 function wp_reset_query() {
76         unset($GLOBALS['wp_query']);
77         $GLOBALS['wp_query'] =& $GLOBALS['wp_the_query'];
78         global $wp_query;
79         if ( !empty($wp_query->post) ) {
80                 $GLOBALS['post'] = $wp_query->post;
81                 setup_postdata($wp_query->post);
82         }
83 }
84
85 /*
86  * Query type checks.
87  */
88
89 /**
90  * Is query requesting an archive page.
91  *
92  * @since 1.5.0
93  * @uses $wp_query
94  *
95  * @return bool True if page is archive.
96  */
97 function is_archive () {
98         global $wp_query;
99
100         return $wp_query->is_archive;
101 }
102
103 /**
104  * Is query requesting an attachment page.
105  *
106  * @since 2.0.0
107  * @uses $wp_query
108  *
109  * @return bool True if page is attachment.
110  */
111 function is_attachment () {
112         global $wp_query;
113
114         return $wp_query->is_attachment;
115 }
116
117 /**
118  * Is query requesting an author page.
119  *
120  * If the $author parameter is specified then the check will be expanded to
121  * include whether the queried author matches the one given in the parameter.
122  * You can match against integers and against strings.
123  *
124  * If matching against an integer, the ID should be used of the author for the
125  * test. If the $author is an ID and matches the author page user ID, then
126  * 'true' will be returned.
127  *
128  * If matching against strings, then the test will be matched against both the
129  * nickname and user nicename and will return true on success.
130  *
131  * @since 1.5.0
132  * @uses $wp_query
133  *
134  * @param string|int $author Optional. Is current page this author.
135  * @return bool True if page is author or $author (if set).
136  */
137 function is_author ($author = '') {
138         global $wp_query;
139
140         if ( !$wp_query->is_author )
141                 return false;
142
143         if ( empty($author) )
144                 return true;
145
146         $author_obj = $wp_query->get_queried_object();
147
148         $author = (array) $author;
149
150         if ( in_array( $author_obj->ID, $author ) )
151                 return true;
152         elseif ( in_array( $author_obj->nickname, $author ) )
153                 return true;
154         elseif ( in_array( $author_obj->user_nicename, $author ) )
155                 return true;
156
157         return false;
158 }
159
160 /**
161  * Whether current page query contains a category name or given category name.
162  *
163  * The category list can contain category IDs, names, or category slugs. If any
164  * of them are part of the query, then it will return true.
165  *
166  * @since 1.5.0
167  * @uses $wp_query
168  *
169  * @param string|array $category Optional.
170  * @return bool
171  */
172 function is_category ($category = '') {
173         global $wp_query;
174
175         if ( !$wp_query->is_category )
176                 return false;
177
178         if ( empty($category) )
179                 return true;
180
181         $cat_obj = $wp_query->get_queried_object();
182
183         $category = (array) $category;
184
185         if ( in_array( $cat_obj->term_id, $category ) )
186                 return true;
187         elseif ( in_array( $cat_obj->name, $category ) )
188                 return true;
189         elseif ( in_array( $cat_obj->slug, $category ) )
190                 return true;
191
192         return false;
193 }
194
195 /**
196  * Whether the current page query has the given tag slug or contains tag.
197  *
198  * @since 2.3.0
199  * @uses $wp_query
200  *
201  * @param string|array $slug Optional. Single tag or list of tags to check for.
202  * @return bool
203  */
204 function is_tag( $slug = '' ) {
205         global $wp_query;
206
207         if ( !$wp_query->is_tag )
208                 return false;
209
210         if ( empty( $slug ) )
211                 return true;
212
213         $tag_obj = $wp_query->get_queried_object();
214
215         $slug = (array) $slug;
216
217         if ( in_array( $tag_obj->slug, $slug ) )
218                 return true;
219
220         return false;
221 }
222
223 /**
224  * Whether the current page query has the given taxonomy slug or contains taxonomy.
225  *
226  * @since 2.5.0
227  * @uses $wp_query
228  *
229  * @param string|array $slug Optional. Slug or slugs to check in current query.
230  * @return bool
231  */
232 function is_tax( $slug = '' ) {
233         global $wp_query;
234
235         if ( !$wp_query->is_tax )
236                 return false;
237
238         if ( empty($slug) )
239                 return true;
240
241         return in_array( get_query_var('taxonomy'), (array) $slug );
242 }
243
244 /**
245  * Whether the current URL is within the comments popup window.
246  *
247  * @since 1.5.0
248  * @uses $wp_query
249  *
250  * @return bool
251  */
252 function is_comments_popup () {
253         global $wp_query;
254
255         return $wp_query->is_comments_popup;
256 }
257
258 /**
259  * Whether current URL is based on a date.
260  *
261  * @since 1.5.0
262  * @uses $wp_query
263  *
264  * @return bool
265  */
266 function is_date () {
267         global $wp_query;
268
269         return $wp_query->is_date;
270 }
271
272 /**
273  * Whether current blog URL contains a day.
274  *
275  * @since 1.5.0
276  * @uses $wp_query
277  *
278  * @return bool
279  */
280 function is_day () {
281         global $wp_query;
282
283         return $wp_query->is_day;
284 }
285
286 /**
287  * Whether current page query is feed URL.
288  *
289  * @since 1.5.0
290  * @uses $wp_query
291  *
292  * @return bool
293  */
294 function is_feed () {
295         global $wp_query;
296
297         return $wp_query->is_feed;
298 }
299
300 /**
301  * Whether current page query is the front of the site.
302  *
303  * @since 2.5.0
304  * @uses is_home()
305  * @uses get_option()
306  *
307  * @return bool True, if front of site.
308  */
309 function is_front_page () {
310         // most likely case
311         if ( 'posts' == get_option('show_on_front') && is_home() )
312                 return true;
313         elseif ( 'page' == get_option('show_on_front') && get_option('page_on_front') && is_page(get_option('page_on_front')) )
314                 return true;
315         else
316                 return false;
317 }
318
319 /**
320  * Whether current page view is the blog homepage.
321  *
322  * @since 1.5.0
323  * @uses $wp_query
324  *
325  * @return bool True if blog view homepage.
326  */
327 function is_home () {
328         global $wp_query;
329
330         return $wp_query->is_home;
331 }
332
333 /**
334  * Whether current page query contains a month.
335  *
336  * @since 1.5.0
337  * @uses $wp_query
338  *
339  * @return bool
340  */
341 function is_month () {
342         global $wp_query;
343
344         return $wp_query->is_month;
345 }
346
347 /**
348  * Whether query is page or contains given page(s).
349  *
350  * Calls the function without any parameters will only test whether the current
351  * query is of the page type. Either a list or a single item can be tested
352  * against for whether the query is a page and also is the value or one of the
353  * values in the page parameter.
354  *
355  * The parameter can contain the page ID, page title, or page name. The
356  * parameter can also be an array of those three values.
357  *
358  * @since 1.5.0
359  * @uses $wp_query
360  *
361  * @param mixed $page Either page or list of pages to test against.
362  * @return bool
363  */
364 function is_page ($page = '') {
365         global $wp_query;
366
367         if ( !$wp_query->is_page )
368                 return false;
369
370         if ( empty($page) )
371                 return true;
372
373         $page_obj = $wp_query->get_queried_object();
374
375         $page = (array) $page;
376
377         if ( in_array( $page_obj->ID, $page ) )
378                 return true;
379         elseif ( in_array( $page_obj->post_title, $page ) )
380                 return true;
381         else if ( in_array( $page_obj->post_name, $page ) )
382                 return true;
383
384         return false;
385 }
386
387 /**
388  * Whether query contains multiple pages for the results.
389  *
390  * @since 1.5.0
391  * @uses $wp_query
392  *
393  * @return bool
394  */
395 function is_paged () {
396         global $wp_query;
397
398         return $wp_query->is_paged;
399 }
400
401 /**
402  * Whether the current page was created by a plugin.
403  *
404  * The plugin can set this by using the global $plugin_page and setting it to
405  * true.
406  *
407  * @since 1.5.0
408  * @global bool $plugin_page Used by plugins to tell the query that current is a plugin page.
409  *
410  * @return bool
411  */
412 function is_plugin_page() {
413         global $plugin_page;
414
415         if ( isset($plugin_page) )
416                 return true;
417
418         return false;
419 }
420
421 /**
422  * Whether the current query is preview of post or page.
423  *
424  * @since 2.0.0
425  * @uses $wp_query
426  *
427  * @return bool
428  */
429 function is_preview() {
430         global $wp_query;
431
432         return $wp_query->is_preview;
433 }
434
435 /**
436  * Whether the current query post is robots.
437  *
438  * @since 2.1.0
439  * @uses $wp_query
440  *
441  * @return bool
442  */
443 function is_robots() {
444         global $wp_query;
445
446         return $wp_query->is_robots;
447 }
448
449 /**
450  * Whether current query is the result of a user search.
451  *
452  * @since 1.5.0
453  * @uses $wp_query
454  *
455  * @return bool
456  */
457 function is_search () {
458         global $wp_query;
459
460         return $wp_query->is_search;
461 }
462
463 /**
464  * Whether the current page query is single page.
465  *
466  * The parameter can contain the post ID, post title, or post name. The
467  * parameter can also be an array of those three values.
468  *
469  * This applies to other post types, attachments, pages, posts. Just means that
470  * the current query has only a single object.
471  *
472  * @since 1.5.0
473  * @uses $wp_query
474  *
475  * @param mixed $post Either post or list of posts to test against.
476  * @return bool
477  */
478 function is_single ($post = '') {
479         global $wp_query;
480
481         if ( !$wp_query->is_single )
482                 return false;
483
484         if ( empty( $post) )
485                 return true;
486
487         $post_obj = $wp_query->get_queried_object();
488
489         $post = (array) $post;
490
491         if ( in_array( $post_obj->ID, $post ) )
492                 return true;
493         elseif ( in_array( $post_obj->post_title, $post ) )
494                 return true;
495         elseif ( in_array( $post_obj->post_name, $post ) )
496                 return true;
497
498         return false;
499 }
500
501 /**
502  * Whether is single post, is a page, or is an attachment.
503  *
504  * @since 1.5.0
505  * @uses $wp_query
506  *
507  * @return bool
508  */
509 function is_singular() {
510         global $wp_query;
511
512         return $wp_query->is_singular;
513 }
514
515 /**
516  * Whether the query contains a time.
517  *
518  * @since 1.5.0
519  * @uses $wp_query
520  *
521  * @return bool
522  */
523 function is_time () {
524         global $wp_query;
525
526         return $wp_query->is_time;
527 }
528
529 /**
530  * Whether the query is a trackback.
531  *
532  * @since 1.5.0
533  * @uses $wp_query
534  *
535  * @return bool
536  */
537 function is_trackback () {
538         global $wp_query;
539
540         return $wp_query->is_trackback;
541 }
542
543 /**
544  * Whether the query contains a year.
545  *
546  * @since 1.5.0
547  * @uses $wp_query
548  *
549  * @return bool
550  */
551 function is_year () {
552         global $wp_query;
553
554         return $wp_query->is_year;
555 }
556
557 /**
558  * Whether current page query is a 404 and no results for WordPress query.
559  *
560  * @since 1.5.0
561  * @uses $wp_query
562  *
563  * @return bool True, if nothing is found matching WordPress Query.
564  */
565 function is_404 () {
566         global $wp_query;
567
568         return $wp_query->is_404;
569 }
570
571 /*
572  * The Loop.  Post loop control.
573  */
574
575 /**
576  * Whether current WordPress query has results to loop over.
577  *
578  * @see WP_Query::have_posts()
579  * @since 1.5.0
580  * @uses $wp_query
581  *
582  * @return bool
583  */
584 function have_posts() {
585         global $wp_query;
586
587         return $wp_query->have_posts();
588 }
589
590 /**
591  * Whether the caller is in the Loop.
592  *
593  * @since 2.0.0
594  * @uses $wp_query
595  *
596  * @return bool True if caller is within loop, false if loop hasn't started or ended.
597  */
598 function in_the_loop() {
599         global $wp_query;
600
601         return $wp_query->in_the_loop;
602 }
603
604 /**
605  * Rewind the loop posts.
606  *
607  * @see WP_Query::rewind_posts()
608  * @since 1.5.0
609  * @uses $wp_query
610  *
611  * @return null
612  */
613 function rewind_posts() {
614         global $wp_query;
615
616         return $wp_query->rewind_posts();
617 }
618
619 /**
620  * Iterate the post index in the loop.
621  *
622  * @see WP_Query::the_post()
623  * @since 1.5.0
624  * @uses $wp_query
625  */
626 function the_post() {
627         global $wp_query;
628
629         $wp_query->the_post();
630 }
631
632 /*
633  * Comments loop.
634  */
635
636 /**
637  * Whether there are comments to loop over.
638  *
639  * @see WP_Query::have_comments()
640  * @since 2.2.0
641  * @uses $wp_query
642  *
643  * @return bool
644  */
645 function have_comments() {
646         global $wp_query;
647         return $wp_query->have_comments();
648 }
649
650 /**
651  * Iterate comment index in the comment loop.
652  *
653  * @see WP_Query::the_comment()
654  * @since 2.2.0
655  * @uses $wp_query
656  *
657  * @return object
658  */
659 function the_comment() {
660         global $wp_query;
661         return $wp_query->the_comment();
662 }
663
664 /*
665  * WP_Query
666  */
667
668 /**
669  * The WordPress Query class.
670  *
671  * @link http://codex.wordpress.org/Function_Reference/WP_Query Codex page.
672  *
673  * @since 1.5.0
674  */
675 class WP_Query {
676
677         /**
678          * Query string
679          *
680          * @since 1.5.0
681          * @access public
682          * @var string
683          */
684         var $query;
685
686         /**
687          * Query search variables set by the user.
688          *
689          * @since 1.5.0
690          * @access public
691          * @var array
692          */
693         var $query_vars = array();
694
695         /**
696          * Holds the data for a single object that is queried.
697          *
698          * Holds the contents of a post, page, category, attachment.
699          *
700          * @since 1.5.0
701          * @access public
702          * @var object|array
703          */
704         var $queried_object;
705
706         /**
707          * The ID of the queried object.
708          *
709          * @since 1.5.0
710          * @access public
711          * @var int
712          */
713         var $queried_object_id;
714
715         /**
716          * Get post database query.
717          *
718          * @since 2.0.1
719          * @access public
720          * @var string
721          */
722         var $request;
723
724         /**
725          * List of posts.
726          *
727          * @since 1.5.0
728          * @access public
729          * @var array
730          */
731         var $posts;
732
733         /**
734          * The amount of posts for the current query.
735          *
736          * @since 1.5.0
737          * @access public
738          * @var int
739          */
740         var $post_count = 0;
741
742         /**
743          * Index of the current item in the loop.
744          *
745          * @since 1.5.0
746          * @access public
747          * @var int
748          */
749         var $current_post = -1;
750
751         /**
752          * Whether the loop has started and the caller is in the loop.
753          *
754          * @since 2.0.0
755          * @access public
756          * @var bool
757          */
758         var $in_the_loop = false;
759
760         /**
761          * The current post ID.
762          *
763          * @since 1.5.0
764          * @access public
765          * @var int
766          */
767         var $post;
768
769         /**
770          * The list of comments for current post.
771          *
772          * @since 2.2.0
773          * @access public
774          * @var array
775          */
776         var $comments;
777
778         /**
779          * The amount of comments for the posts.
780          *
781          * @since 2.2.0
782          * @access public
783          * @var int
784          */
785         var $comment_count = 0;
786
787         /**
788          * The index of the comment in the comment loop.
789          *
790          * @since 2.2.0
791          * @access public
792          * @var int
793          */
794         var $current_comment = -1;
795
796         /**
797          * Current comment ID.
798          *
799          * @since 2.2.0
800          * @access public
801          * @var int
802          */
803         var $comment;
804
805         /**
806          * Amount of posts if limit clause was not used.
807          *
808          * @since 2.1.0
809          * @access public
810          * @var int
811          */
812         var $found_posts = 0;
813
814         /**
815          * The amount of pages.
816          *
817          * @since 2.1.0
818          * @access public
819          * @var int
820          */
821         var $max_num_pages = 0;
822
823         /**
824          * The amount of comment pages.
825          *
826          * @since 2.7.0
827          * @access public
828          * @var int
829          */
830         var $max_num_comment_pages = 0;
831
832         /**
833          * Set if query is single post.
834          *
835          * @since 1.5.0
836          * @access public
837          * @var bool
838          */
839         var $is_single = false;
840
841         /**
842          * Set if query is preview of blog.
843          *
844          * @since 2.0.0
845          * @access public
846          * @var bool
847          */
848         var $is_preview = false;
849
850         /**
851          * Set if query returns a page.
852          *
853          * @since 1.5.0
854          * @access public
855          * @var bool
856          */
857         var $is_page = false;
858
859         /**
860          * Set if query is an archive list.
861          *
862          * @since 1.5.0
863          * @access public
864          * @var bool
865          */
866         var $is_archive = false;
867
868         /**
869          * Set if query is part of a date.
870          *
871          * @since 1.5.0
872          * @access public
873          * @var bool
874          */
875         var $is_date = false;
876
877         /**
878          * Set if query contains a year.
879          *
880          * @since 1.5.0
881          * @access public
882          * @var bool
883          */
884         var $is_year = false;
885
886         /**
887          * Set if query contains a month.
888          *
889          * @since 1.5.0
890          * @access public
891          * @var bool
892          */
893         var $is_month = false;
894
895         /**
896          * Set if query contains a day.
897          *
898          * @since 1.5.0
899          * @access public
900          * @var bool
901          */
902         var $is_day = false;
903
904         /**
905          * Set if query contains time.
906          *
907          * @since 1.5.0
908          * @access public
909          * @var bool
910          */
911         var $is_time = false;
912
913         /**
914          * Set if query contains an author.
915          *
916          * @since 1.5.0
917          * @access public
918          * @var bool
919          */
920         var $is_author = false;
921
922         /**
923          * Set if query contains category.
924          *
925          * @since 1.5.0
926          * @access public
927          * @var bool
928          */
929         var $is_category = false;
930
931         /**
932          * Set if query contains tag.
933          *
934          * @since 2.3.0
935          * @access public
936          * @var bool
937          */
938         var $is_tag = false;
939
940         /**
941          * Set if query contains taxonomy.
942          *
943          * @since 2.5.0
944          * @access public
945          * @var bool
946          */
947         var $is_tax = false;
948
949         /**
950          * Set if query was part of a search result.
951          *
952          * @since 1.5.0
953          * @access public
954          * @var bool
955          */
956         var $is_search = false;
957
958         /**
959          * Set if query is feed display.
960          *
961          * @since 1.5.0
962          * @access public
963          * @var bool
964          */
965         var $is_feed = false;
966
967         /**
968          * Set if query is comment feed display.
969          *
970          * @since 2.2.0
971          * @access public
972          * @var bool
973          */
974         var $is_comment_feed = false;
975
976         /**
977          * Set if query is trackback.
978          *
979          * @since 1.5.0
980          * @access public
981          * @var bool
982          */
983         var $is_trackback = false;
984
985         /**
986          * Set if query is blog homepage.
987          *
988          * @since 1.5.0
989          * @access public
990          * @var bool
991          */
992         var $is_home = false;
993
994         /**
995          * Set if query couldn't found anything.
996          *
997          * @since 1.5.0
998          * @access public
999          * @var bool
1000          */
1001         var $is_404 = false;
1002
1003         /**
1004          * Set if query is within comments popup window.
1005          *
1006          * @since 1.5.0
1007          * @access public
1008          * @var bool
1009          */
1010         var $is_comments_popup = false;
1011
1012         /**
1013          * Set if query is part of administration page.
1014          *
1015          * @since 1.5.0
1016          * @access public
1017          * @var bool
1018          */
1019         var $is_admin = false;
1020
1021         /**
1022          * Set if query is an attachment.
1023          *
1024          * @since 2.0.0
1025          * @access public
1026          * @var bool
1027          */
1028         var $is_attachment = false;
1029
1030         /**
1031          * Set if is single, is a page, or is an attachment.
1032          *
1033          * @since 2.1.0
1034          * @access public
1035          * @var bool
1036          */
1037         var $is_singular = false;
1038
1039         /**
1040          * Set if query is for robots.
1041          *
1042          * @since 2.1.0
1043          * @access public
1044          * @var bool
1045          */
1046         var $is_robots = false;
1047
1048         /**
1049          * Set if query contains posts.
1050          *
1051          * Basically, the homepage if the option isn't set for the static homepage.
1052          *
1053          * @since 2.1.0
1054          * @access public
1055          * @var bool
1056          */
1057         var $is_posts_page = false;
1058
1059         /**
1060          * Resets query flags to false.
1061          *
1062          * The query flags are what page info WordPress was able to figure out.
1063          *
1064          * @since 2.0.0
1065          * @access private
1066          */
1067         function init_query_flags() {
1068                 $this->is_single = false;
1069                 $this->is_page = false;
1070                 $this->is_archive = false;
1071                 $this->is_date = false;
1072                 $this->is_year = false;
1073                 $this->is_month = false;
1074                 $this->is_day = false;
1075                 $this->is_time = false;
1076                 $this->is_author = false;
1077                 $this->is_category = false;
1078                 $this->is_tag = false;
1079                 $this->is_tax = false;
1080                 $this->is_search = false;
1081                 $this->is_feed = false;
1082                 $this->is_comment_feed = false;
1083                 $this->is_trackback = false;
1084                 $this->is_home = false;
1085                 $this->is_404 = false;
1086                 $this->is_paged = false;
1087                 $this->is_admin = false;
1088                 $this->is_attachment = false;
1089                 $this->is_singular = false;
1090                 $this->is_robots = false;
1091                 $this->is_posts_page = false;
1092         }
1093
1094         /**
1095          * Initiates object properties and sets default values.
1096          *
1097          * @since 1.5.0
1098          * @access public
1099          */
1100         function init () {
1101                 unset($this->posts);
1102                 unset($this->query);
1103                 $this->query_vars = array();
1104                 unset($this->queried_object);
1105                 unset($this->queried_object_id);
1106                 $this->post_count = 0;
1107                 $this->current_post = -1;
1108                 $this->in_the_loop = false;
1109
1110                 $this->init_query_flags();
1111         }
1112
1113         /**
1114          * Reparse the query vars.
1115          *
1116          * @since 1.5.0
1117          * @access public
1118          */
1119         function parse_query_vars() {
1120                 $this->parse_query('');
1121         }
1122
1123         /**
1124          * Fills in the query variables, which do not exist within the parameter.
1125          *
1126          * @since 2.1.0
1127          * @access public
1128          *
1129          * @param array $array Defined query variables.
1130          * @return array Complete query variables with undefined ones filled in empty.
1131          */
1132         function fill_query_vars($array) {
1133                 $keys = array(
1134                         'error'
1135                         , 'm'
1136                         , 'p'
1137                         , 'post_parent'
1138                         , 'subpost'
1139                         , 'subpost_id'
1140                         , 'attachment'
1141                         , 'attachment_id'
1142                         , 'name'
1143                         , 'hour'
1144                         , 'static'
1145                         , 'pagename'
1146                         , 'page_id'
1147                         , 'second'
1148                         , 'minute'
1149                         , 'hour'
1150                         , 'day'
1151                         , 'monthnum'
1152                         , 'year'
1153                         , 'w'
1154                         , 'category_name'
1155                         , 'tag'
1156                         , 'cat'
1157                         , 'tag_id'
1158                         , 'author_name'
1159                         , 'feed'
1160                         , 'tb'
1161                         , 'paged'
1162                         , 'comments_popup'
1163                         , 'meta_key'
1164                         , 'meta_value'
1165                         , 'preview'
1166                 );
1167
1168                 foreach ($keys as $key) {
1169                         if ( !isset($array[$key]))
1170                                 $array[$key] = '';
1171                 }
1172
1173                 $array_keys = array('category__in', 'category__not_in', 'category__and', 'post__in', 'post__not_in',
1174                         'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and');
1175
1176                 foreach ( $array_keys as $key ) {
1177                         if ( !isset($array[$key]))
1178                                 $array[$key] = array();
1179                 }
1180                 return $array;
1181         }
1182
1183         /**
1184          * Parse a query string and set query type booleans.
1185          *
1186          * @since 1.5.0
1187          * @access public
1188          *
1189          * @param string|array $query
1190          */
1191         function parse_query ($query) {
1192                 if ( !empty($query) || !isset($this->query) ) {
1193                         $this->init();
1194                         if ( is_array($query) )
1195                                 $this->query_vars = $query;
1196                         else
1197                                 parse_str($query, $this->query_vars);
1198                         $this->query = $query;
1199                 }
1200
1201                 $this->query_vars = $this->fill_query_vars($this->query_vars);
1202                 $qv = &$this->query_vars;
1203
1204                 if ( ! empty($qv['robots']) )
1205                         $this->is_robots = true;
1206
1207                 $qv['p'] =  absint($qv['p']);
1208                 $qv['page_id'] =  absint($qv['page_id']);
1209                 $qv['year'] = absint($qv['year']);
1210                 $qv['monthnum'] = absint($qv['monthnum']);
1211                 $qv['day'] = absint($qv['day']);
1212                 $qv['w'] = absint($qv['w']);
1213                 $qv['m'] = absint($qv['m']);
1214                 $qv['paged'] = absint($qv['paged']);
1215                 $qv['cat'] = preg_replace( '|[^0-9,-]|', '', $qv['cat'] ); // comma separated list of positive or negative integers
1216                 $qv['pagename'] = trim( $qv['pagename'] );
1217                 $qv['name'] = trim( $qv['name'] );
1218                 if ( '' !== $qv['hour'] ) $qv['hour'] = absint($qv['hour']);
1219                 if ( '' !== $qv['minute'] ) $qv['minute'] = absint($qv['minute']);
1220                 if ( '' !== $qv['second'] ) $qv['second'] = absint($qv['second']);
1221
1222                 // Compat.  Map subpost to attachment.
1223                 if ( '' != $qv['subpost'] )
1224                         $qv['attachment'] = $qv['subpost'];
1225                 if ( '' != $qv['subpost_id'] )
1226                         $qv['attachment_id'] = $qv['subpost_id'];
1227
1228                 $qv['attachment_id'] = absint($qv['attachment_id']);
1229
1230                 if ( ('' != $qv['attachment']) || !empty($qv['attachment_id']) ) {
1231                         $this->is_single = true;
1232                         $this->is_attachment = true;
1233                 } elseif ( '' != $qv['name'] ) {
1234                         $this->is_single = true;
1235                 } elseif ( $qv['p'] ) {
1236                         $this->is_single = true;
1237                 } elseif ( ('' !== $qv['hour']) && ('' !== $qv['minute']) &&('' !== $qv['second']) && ('' != $qv['year']) && ('' != $qv['monthnum']) && ('' != $qv['day']) ) {
1238                         // If year, month, day, hour, minute, and second are set, a single
1239                         // post is being queried.
1240                         $this->is_single = true;
1241                 } elseif ( '' != $qv['static'] || '' != $qv['pagename'] || !empty($qv['page_id']) ) {
1242                         $this->is_page = true;
1243                         $this->is_single = false;
1244                 } elseif ( !empty($qv['s']) ) {
1245                         $this->is_search = true;
1246                 } else {
1247                 // Look for archive queries.  Dates, categories, authors.
1248
1249                         if ( '' !== $qv['second'] ) {
1250                                 $this->is_time = true;
1251                                 $this->is_date = true;
1252                         }
1253
1254                         if ( '' !== $qv['minute'] ) {
1255                                 $this->is_time = true;
1256                                 $this->is_date = true;
1257                         }
1258
1259                         if ( '' !== $qv['hour'] ) {
1260                                 $this->is_time = true;
1261                                 $this->is_date = true;
1262                         }
1263
1264                         if ( $qv['day'] ) {
1265                                 if (! $this->is_date) {
1266                                         $this->is_day = true;
1267                                         $this->is_date = true;
1268                                 }
1269                         }
1270
1271                         if ( $qv['monthnum'] ) {
1272                                 if (! $this->is_date) {
1273                                         $this->is_month = true;
1274                                         $this->is_date = true;
1275                                 }
1276                         }
1277
1278                         if ( $qv['year'] ) {
1279                                 if (! $this->is_date) {
1280                                         $this->is_year = true;
1281                                         $this->is_date = true;
1282                                 }
1283                         }
1284
1285                         if ( $qv['m'] ) {
1286                                 $this->is_date = true;
1287                                 if (strlen($qv['m']) > 9) {
1288                                         $this->is_time = true;
1289                                 } else if (strlen($qv['m']) > 7) {
1290                                         $this->is_day = true;
1291                                 } else if (strlen($qv['m']) > 5) {
1292                                         $this->is_month = true;
1293                                 } else {
1294                                         $this->is_year = true;
1295                                 }
1296                         }
1297
1298                         if ('' != $qv['w']) {
1299                                 $this->is_date = true;
1300                         }
1301
1302                         if ( empty($qv['cat']) || ($qv['cat'] == '0') ) {
1303                                 $this->is_category = false;
1304                         } else {
1305                                 if (strpos($qv['cat'], '-') !== false) {
1306                                         $this->is_category = false;
1307                                 } else {
1308                                         $this->is_category = true;
1309                                 }
1310                         }
1311
1312                         if ( '' != $qv['category_name'] ) {
1313                                 $this->is_category = true;
1314                         }
1315
1316                         if ( !is_array($qv['category__in']) || empty($qv['category__in']) ) {
1317                                 $qv['category__in'] = array();
1318                         } else {
1319                                 $qv['category__in'] = array_map('absint', $qv['category__in']);
1320                                 $this->is_category = true;
1321                         }
1322
1323                         if ( !is_array($qv['category__not_in']) || empty($qv['category__not_in']) ) {
1324                                 $qv['category__not_in'] = array();
1325                         } else {
1326                                 $qv['category__not_in'] = array_map('absint', $qv['category__not_in']);
1327                         }
1328
1329                         if ( !is_array($qv['category__and']) || empty($qv['category__and']) ) {
1330                                 $qv['category__and'] = array();
1331                         } else {
1332                                 $qv['category__and'] = array_map('absint', $qv['category__and']);
1333                                 $this->is_category = true;
1334                         }
1335
1336                         if (  '' != $qv['tag'] )
1337                                 $this->is_tag = true;
1338
1339                         $qv['tag_id'] = absint($qv['tag_id']);
1340                         if (  !empty($qv['tag_id']) )
1341                                 $this->is_tag = true;
1342
1343                         if ( !is_array($qv['tag__in']) || empty($qv['tag__in']) ) {
1344                                 $qv['tag__in'] = array();
1345                         } else {
1346                                 $qv['tag__in'] = array_map('absint', $qv['tag__in']);
1347                                 $this->is_tag = true;
1348                         }
1349
1350                         if ( !is_array($qv['tag__not_in']) || empty($qv['tag__not_in']) ) {
1351                                 $qv['tag__not_in'] = array();
1352                         } else {
1353                                 $qv['tag__not_in'] = array_map('absint', $qv['tag__not_in']);
1354                         }
1355
1356                         if ( !is_array($qv['tag__and']) || empty($qv['tag__and']) ) {
1357                                 $qv['tag__and'] = array();
1358                         } else {
1359                                 $qv['tag__and'] = array_map('absint', $qv['tag__and']);
1360                                 $this->is_category = true;
1361                         }
1362
1363                         if ( !is_array($qv['tag_slug__in']) || empty($qv['tag_slug__in']) ) {
1364                                 $qv['tag_slug__in'] = array();
1365                         } else {
1366                                 $qv['tag_slug__in'] = array_map('sanitize_title', $qv['tag_slug__in']);
1367                                 $this->is_tag = true;
1368                         }
1369
1370                         if ( !is_array($qv['tag_slug__and']) || empty($qv['tag_slug__and']) ) {
1371                                 $qv['tag_slug__and'] = array();
1372                         } else {
1373                                 $qv['tag_slug__and'] = array_map('sanitize_title', $qv['tag_slug__and']);
1374                                 $this->is_tag = true;
1375                         }
1376
1377                         if ( empty($qv['taxonomy']) || empty($qv['term']) ) {
1378                                 $this->is_tax = false;
1379                                 foreach ( $GLOBALS['wp_taxonomies'] as $taxonomy => $t ) {
1380                                         if ( $t->query_var && isset($qv[$t->query_var]) && '' != $qv[$t->query_var] ) {
1381                                                 $qv['taxonomy'] = $taxonomy;
1382                                                 $qv['term'] = $qv[$t->query_var];
1383                                                 $this->is_tax = true;
1384                                                 break;
1385                                         }
1386                                 }
1387                         } else {
1388                                 $this->is_tax = true;
1389                         }
1390
1391                         if ( empty($qv['author']) || ($qv['author'] == '0') ) {
1392                                 $this->is_author = false;
1393                         } else {
1394                                 $this->is_author = true;
1395                         }
1396
1397                         if ( '' != $qv['author_name'] ) {
1398                                 $this->is_author = true;
1399                         }
1400
1401                         if ( ($this->is_date || $this->is_author || $this->is_category || $this->is_tag || $this->is_tax) )
1402                                 $this->is_archive = true;
1403                 }
1404
1405                 if ( '' != $qv['feed'] )
1406                         $this->is_feed = true;
1407
1408                 if ( '' != $qv['tb'] )
1409                         $this->is_trackback = true;
1410
1411                 if ( '' != $qv['paged'] && ( intval($qv['paged']) > 1 ) )
1412                         $this->is_paged = true;
1413
1414                 if ( '' != $qv['comments_popup'] )
1415                         $this->is_comments_popup = true;
1416
1417                 // if we're previewing inside the write screen
1418                 if ('' != $qv['preview'])
1419                         $this->is_preview = true;
1420
1421                 if ( is_admin() )
1422                         $this->is_admin = true;
1423
1424                 if ( false !== strpos($qv['feed'], 'comments-') ) {
1425                         $qv['feed'] = str_replace('comments-', '', $qv['feed']);
1426                         $qv['withcomments'] = 1;
1427                 }
1428
1429                 $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
1430
1431                 if ( $this->is_feed && ( !empty($qv['withcomments']) || ( empty($qv['withoutcomments']) && $this->is_singular ) ) )
1432                         $this->is_comment_feed = true;
1433
1434                 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 ) )
1435                         $this->is_home = true;
1436
1437                 // Correct is_* for page_on_front and page_for_posts
1438                 if ( $this->is_home && ( empty($this->query) || $qv['preview'] == 'true' ) && 'page' == get_option('show_on_front') && get_option('page_on_front') ) {
1439                         $this->is_page = true;
1440                         $this->is_home = false;
1441                         $qv['page_id'] = get_option('page_on_front');
1442                 }
1443
1444                 if ( '' != $qv['pagename'] ) {
1445                         $this->queried_object =& get_page_by_path($qv['pagename']);
1446                         if ( !empty($this->queried_object) )
1447                                 $this->queried_object_id = (int) $this->queried_object->ID;
1448                         else
1449                                 unset($this->queried_object);
1450
1451                         if  ( 'page' == get_option('show_on_front') && isset($this->queried_object_id) && $this->queried_object_id == get_option('page_for_posts') ) {
1452                                 $this->is_page = false;
1453                                 $this->is_home = true;
1454                                 $this->is_posts_page = true;
1455                         }
1456                 }
1457
1458                 if ( $qv['page_id'] ) {
1459                         if  ( 'page' == get_option('show_on_front') && $qv['page_id'] == get_option('page_for_posts') ) {
1460                                 $this->is_page = false;
1461                                 $this->is_home = true;
1462                                 $this->is_posts_page = true;
1463                         }
1464                 }
1465
1466                 if ( !empty($qv['post_type']) ) {
1467                         if(is_array($qv['post_type']))
1468                                 $qv['post_type'] = array_map('sanitize_user', $qv['post_type'], array(true));
1469                         else
1470                                 $qv['post_type'] = sanitize_user($qv['post_type'], true);
1471                 }
1472
1473                 if ( !empty($qv['post_status']) )
1474                         $qv['post_status'] = preg_replace('|[^a-z0-9_,-]|', '', $qv['post_status']);
1475
1476                 if ( $this->is_posts_page && ( ! isset($qv['withcomments']) || ! $qv['withcomments'] ) )
1477                         $this->is_comment_feed = false;
1478
1479                 $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
1480                 // Done correcting is_* for page_on_front and page_for_posts
1481
1482                 if ('404' == $qv['error'])
1483                         $this->set_404();
1484
1485                 if ( !empty($query) )
1486                         do_action_ref_array('parse_query', array(&$this));
1487         }
1488
1489         /**
1490          * Sets the 404 property and saves whether query is feed.
1491          *
1492          * @since 2.0.0
1493          * @access public
1494          */
1495         function set_404() {
1496                 $is_feed = $this->is_feed;
1497
1498                 $this->init_query_flags();
1499                 $this->is_404 = true;
1500
1501                 $this->is_feed = $is_feed;
1502         }
1503
1504         /**
1505          * Retrieve query variable.
1506          *
1507          * @since 1.5.0
1508          * @access public
1509          *
1510          * @param string $query_var Query variable key.
1511          * @return mixed
1512          */
1513         function get($query_var) {
1514                 if (isset($this->query_vars[$query_var])) {
1515                         return $this->query_vars[$query_var];
1516                 }
1517
1518                 return '';
1519         }
1520
1521         /**
1522          * Set query variable.
1523          *
1524          * @since 1.5.0
1525          * @access public
1526          *
1527          * @param string $query_var Query variable key.
1528          * @param mixed $value Query variable value.
1529          */
1530         function set($query_var, $value) {
1531                 $this->query_vars[$query_var] = $value;
1532         }
1533
1534         /**
1535          * Retrieve the posts based on query variables.
1536          *
1537          * There are a few filters and actions that can be used to modify the post
1538          * database query.
1539          *
1540          * @since 1.5.0
1541          * @access public
1542          * @uses do_action_ref_array() Calls 'pre_get_posts' hook before retrieving posts.
1543          *
1544          * @return array List of posts.
1545          */
1546         function &get_posts() {
1547                 global $wpdb, $user_ID;
1548
1549                 do_action_ref_array('pre_get_posts', array(&$this));
1550
1551                 // Shorthand.
1552                 $q = &$this->query_vars;
1553
1554                 $q = $this->fill_query_vars($q);
1555
1556                 // First let's clear some variables
1557                 $distinct = '';
1558                 $whichcat = '';
1559                 $whichauthor = '';
1560                 $whichmimetype = '';
1561                 $where = '';
1562                 $limits = '';
1563                 $join = '';
1564                 $search = '';
1565                 $groupby = '';
1566                 $fields = "$wpdb->posts.*";
1567                 $post_status_join = false;
1568                 $page = 1;
1569
1570                 if ( !isset($q['caller_get_posts']) )
1571                         $q['caller_get_posts'] = false;
1572
1573                 if ( !isset($q['suppress_filters']) )
1574                         $q['suppress_filters'] = false;
1575
1576                 if ( !isset($q['post_type']) ) {
1577                         if ( $this->is_search )
1578                                 $q['post_type'] = 'any';
1579                         else
1580                                 $q['post_type'] = '';
1581                 }
1582                 $post_type = $q['post_type'];
1583                 if ( !isset($q['posts_per_page']) || $q['posts_per_page'] == 0 )
1584                         $q['posts_per_page'] = get_option('posts_per_page');
1585                 if ( isset($q['showposts']) && $q['showposts'] ) {
1586                         $q['showposts'] = (int) $q['showposts'];
1587                         $q['posts_per_page'] = $q['showposts'];
1588                 }
1589                 if ( (isset($q['posts_per_archive_page']) && $q['posts_per_archive_page'] != 0) && ($this->is_archive || $this->is_search) )
1590                         $q['posts_per_page'] = $q['posts_per_archive_page'];
1591                 if ( !isset($q['nopaging']) ) {
1592                         if ($q['posts_per_page'] == -1) {
1593                                 $q['nopaging'] = true;
1594                         } else {
1595                                 $q['nopaging'] = false;
1596                         }
1597                 }
1598                 if ( $this->is_feed ) {
1599                         $q['posts_per_page'] = get_option('posts_per_rss');
1600                         $q['nopaging'] = false;
1601                 }
1602                 $q['posts_per_page'] = (int) $q['posts_per_page'];
1603                 if ( $q['posts_per_page'] < -1 )
1604                         $q['posts_per_page'] = abs($q['posts_per_page']);
1605                 else if ( $q['posts_per_page'] == 0 )
1606                         $q['posts_per_page'] = 1;
1607
1608                 if ( !isset($q['comments_per_page']) || $q['comments_per_page'] == 0 )
1609                         $q['comments_per_page'] = get_option('comments_per_page');
1610
1611                 if ( $this->is_home && (empty($this->query) || $q['preview'] == 'true') && ( 'page' == get_option('show_on_front') ) && get_option('page_on_front') ) {
1612                         $this->is_page = true;
1613                         $this->is_home = false;
1614                         $q['page_id'] = get_option('page_on_front');
1615                 }
1616
1617                 if (isset($q['page'])) {
1618                         $q['page'] = trim($q['page'], '/');
1619                         $q['page'] = absint($q['page']);
1620                 }
1621
1622                 // If a month is specified in the querystring, load that month
1623                 if ( $q['m'] ) {
1624                         $q['m'] = '' . preg_replace('|[^0-9]|', '', $q['m']);
1625                         $where .= " AND YEAR($wpdb->posts.post_date)=" . substr($q['m'], 0, 4);
1626                         if (strlen($q['m'])>5)
1627                                 $where .= " AND MONTH($wpdb->posts.post_date)=" . substr($q['m'], 4, 2);
1628                         if (strlen($q['m'])>7)
1629                                 $where .= " AND DAYOFMONTH($wpdb->posts.post_date)=" . substr($q['m'], 6, 2);
1630                         if (strlen($q['m'])>9)
1631                                 $where .= " AND HOUR($wpdb->posts.post_date)=" . substr($q['m'], 8, 2);
1632                         if (strlen($q['m'])>11)
1633                                 $where .= " AND MINUTE($wpdb->posts.post_date)=" . substr($q['m'], 10, 2);
1634                         if (strlen($q['m'])>13)
1635                                 $where .= " AND SECOND($wpdb->posts.post_date)=" . substr($q['m'], 12, 2);
1636                 }
1637
1638                 if ( '' !== $q['hour'] )
1639                         $where .= " AND HOUR($wpdb->posts.post_date)='" . $q['hour'] . "'";
1640
1641                 if ( '' !== $q['minute'] )
1642                         $where .= " AND MINUTE($wpdb->posts.post_date)='" . $q['minute'] . "'";
1643
1644                 if ( '' !== $q['second'] )
1645                         $where .= " AND SECOND($wpdb->posts.post_date)='" . $q['second'] . "'";
1646
1647                 if ( $q['year'] )
1648                         $where .= " AND YEAR($wpdb->posts.post_date)='" . $q['year'] . "'";
1649
1650                 if ( $q['monthnum'] )
1651                         $where .= " AND MONTH($wpdb->posts.post_date)='" . $q['monthnum'] . "'";
1652
1653                 if ( $q['day'] )
1654                         $where .= " AND DAYOFMONTH($wpdb->posts.post_date)='" . $q['day'] . "'";
1655
1656                 if ('' != $q['name']) {
1657                         $q['name'] = sanitize_title($q['name']);
1658                         $where .= " AND $wpdb->posts.post_name = '" . $q['name'] . "'";
1659                 } else if ('' != $q['pagename']) {
1660                         if ( isset($this->queried_object_id) )
1661                                 $reqpage = $this->queried_object_id;
1662                         else {
1663                                 $reqpage = get_page_by_path($q['pagename']);
1664                                 if ( !empty($reqpage) )
1665                                         $reqpage = $reqpage->ID;
1666                                 else
1667                                         $reqpage = 0;
1668                         }
1669
1670                         $page_for_posts = get_option('page_for_posts');
1671                         if  ( ('page' != get_option('show_on_front') ) ||  empty($page_for_posts) || ( $reqpage != $page_for_posts ) ) {
1672                                 $q['pagename'] = str_replace('%2F', '/', urlencode(urldecode($q['pagename'])));
1673                                 $page_paths = '/' . trim($q['pagename'], '/');
1674                                 $q['pagename'] = sanitize_title(basename($page_paths));
1675                                 $q['name'] = $q['pagename'];
1676                                 $where .= " AND ($wpdb->posts.ID = '$reqpage')";
1677                                 $reqpage_obj = get_page($reqpage);
1678                                 if ( is_object($reqpage_obj) && 'attachment' == $reqpage_obj->post_type ) {
1679                                         $this->is_attachment = true;
1680                                         $this->is_page = true;
1681                                         $q['attachment_id'] = $reqpage;
1682                                 }
1683                         }
1684                 } elseif ('' != $q['attachment']) {
1685                         $q['attachment'] = str_replace('%2F', '/', urlencode(urldecode($q['attachment'])));
1686                         $attach_paths = '/' . trim($q['attachment'], '/');
1687                         $q['attachment'] = sanitize_title(basename($attach_paths));
1688                         $q['name'] = $q['attachment'];
1689                         $where .= " AND $wpdb->posts.post_name = '" . $q['attachment'] . "'";
1690                 }
1691
1692                 if ( $q['w'] )
1693                         $where .= " AND WEEK($wpdb->posts.post_date, 1)='" . $q['w'] . "'";
1694
1695                 if ( intval($q['comments_popup']) )
1696                         $q['p'] = absint($q['comments_popup']);
1697
1698                 // If an attachment is requested by number, let it supercede any post number.
1699                 if ( $q['attachment_id'] )
1700                         $q['p'] = absint($q['attachment_id']);
1701
1702                 // If a post number is specified, load that post
1703                 if ( $q['p'] ) {
1704                         $where .= " AND {$wpdb->posts}.ID = " . $q['p'];
1705                 } elseif ( $q['post__in'] ) {
1706                         $post__in = implode(',', array_map( 'absint', $q['post__in'] ));
1707                         $where .= " AND {$wpdb->posts}.ID IN ($post__in)";
1708                 } elseif ( $q['post__not_in'] ) {
1709                         $post__not_in = implode(',',  array_map( 'absint', $q['post__not_in'] ));
1710                         $where .= " AND {$wpdb->posts}.ID NOT IN ($post__not_in)";
1711                 }
1712
1713                 if ( is_numeric($q['post_parent']) )
1714                         $where .= $wpdb->prepare( " AND $wpdb->posts.post_parent = %d ", $q['post_parent'] );
1715
1716                 if ( $q['page_id'] ) {
1717                         if  ( ('page' != get_option('show_on_front') ) || ( $q['page_id'] != get_option('page_for_posts') ) ) {
1718                                 $q['p'] = $q['page_id'];
1719                                 $where = " AND {$wpdb->posts}.ID = " . $q['page_id'];
1720                         }
1721                 }
1722
1723                 // If a search pattern is specified, load the posts that match
1724                 if ( !empty($q['s']) ) {
1725                         // added slashes screw with quote grouping when done early, so done later
1726                         $q['s'] = stripslashes($q['s']);
1727                         if ( !empty($q['sentence']) ) {
1728                                 $q['search_terms'] = array($q['s']);
1729                         } else {
1730                                 preg_match_all('/".*?("|$)|((?<=[\\s",+])|^)[^\\s",+]+/', $q['s'], $matches);
1731                                 $q['search_terms'] = array_map('_search_terms_tidy', $matches[0]);
1732                         }
1733                         $n = !empty($q['exact']) ? '' : '%';
1734                         $searchand = '';
1735                         foreach( (array) $q['search_terms'] as $term) {
1736                                 $term = addslashes_gpc($term);
1737                                 $search .= "{$searchand}(($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') OR ($wpdb->posts.post_content LIKE '{$n}{$term}{$n}'))";
1738                                 $searchand = ' AND ';
1739                         }
1740                         $term = esc_sql($q['s']);
1741                         if (empty($q['sentence']) && count($q['search_terms']) > 1 && $q['search_terms'][0] != $q['s'] )
1742                                 $search .= " OR ($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') OR ($wpdb->posts.post_content LIKE '{$n}{$term}{$n}')";
1743
1744                         if ( !empty($search) ) {
1745                                 $search = " AND ({$search}) ";
1746                                 if ( !is_user_logged_in() )
1747                                         $search .= " AND ($wpdb->posts.post_password = '') ";
1748                         }
1749                 }
1750
1751                 // Category stuff
1752
1753                 if ( empty($q['cat']) || ($q['cat'] == '0') ||
1754                                 // Bypass cat checks if fetching specific posts
1755                                 $this->is_singular ) {
1756                         $whichcat = '';
1757                 } else {
1758                         $q['cat'] = ''.urldecode($q['cat']).'';
1759                         $q['cat'] = addslashes_gpc($q['cat']);
1760                         $cat_array = preg_split('/[,\s]+/', $q['cat']);
1761                         $q['cat'] = '';
1762                         $req_cats = array();
1763                         foreach ( (array) $cat_array as $cat ) {
1764                                 $cat = intval($cat);
1765                                 $req_cats[] = $cat;
1766                                 $in = ($cat > 0);
1767                                 $cat = abs($cat);
1768                                 if ( $in ) {
1769                                         $q['category__in'][] = $cat;
1770                                         $q['category__in'] = array_merge($q['category__in'], get_term_children($cat, 'category'));
1771                                 } else {
1772                                         $q['category__not_in'][] = $cat;
1773                                         $q['category__not_in'] = array_merge($q['category__not_in'], get_term_children($cat, 'category'));
1774                                 }
1775                         }
1776                         $q['cat'] = implode(',', $req_cats);
1777                 }
1778
1779                 if ( !empty($q['category__in']) ) {
1780                         $join = " INNER JOIN $wpdb->term_relationships ON ($wpdb->posts.ID = $wpdb->term_relationships.object_id) INNER JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id) ";
1781                         $whichcat .= " AND $wpdb->term_taxonomy.taxonomy = 'category' ";
1782                         $include_cats = "'" . implode("', '", $q['category__in']) . "'";
1783                         $whichcat .= " AND $wpdb->term_taxonomy.term_id IN ($include_cats) ";
1784                 }
1785
1786                 if ( !empty($q['category__not_in']) ) {
1787                         $cat_string = "'" . implode("', '", $q['category__not_in']) . "'";
1788                         $whichcat .= " AND $wpdb->posts.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy = 'category' AND tt.term_id IN ($cat_string) )";
1789                 }
1790
1791                 // Category stuff for nice URLs
1792                 if ( '' != $q['category_name'] && !$this->is_singular ) {
1793                         $q['category_name'] = implode('/', array_map('sanitize_title', explode('/', $q['category_name'])));
1794                         $reqcat = get_category_by_path($q['category_name']);
1795                         $q['category_name'] = str_replace('%2F', '/', urlencode(urldecode($q['category_name'])));
1796                         $cat_paths = '/' . trim($q['category_name'], '/');
1797                         $q['category_name'] = sanitize_title(basename($cat_paths));
1798
1799                         $cat_paths = '/' . trim(urldecode($q['category_name']), '/');
1800                         $q['category_name'] = sanitize_title(basename($cat_paths));
1801                         $cat_paths = explode('/', $cat_paths);
1802                         $cat_path = '';
1803                         foreach ( (array) $cat_paths as $pathdir )
1804                                 $cat_path .= ( $pathdir != '' ? '/' : '' ) . sanitize_title($pathdir);
1805
1806                         //if we don't match the entire hierarchy fallback on just matching the nicename
1807                         if ( empty($reqcat) )
1808                                 $reqcat = get_category_by_path($q['category_name'], false);
1809
1810                         if ( !empty($reqcat) )
1811                                 $reqcat = $reqcat->term_id;
1812                         else
1813                                 $reqcat = 0;
1814
1815                         $q['cat'] = $reqcat;
1816
1817                         $join = " INNER JOIN $wpdb->term_relationships ON ($wpdb->posts.ID = $wpdb->term_relationships.object_id) INNER JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id) ";
1818                         $whichcat = " AND $wpdb->term_taxonomy.taxonomy = 'category' ";
1819                         $in_cats = array($q['cat']);
1820                         $in_cats = array_merge($in_cats, get_term_children($q['cat'], 'category'));
1821                         $in_cats = "'" . implode("', '", $in_cats) . "'";
1822                         $whichcat .= "AND $wpdb->term_taxonomy.term_id IN ($in_cats)";
1823                         $groupby = "{$wpdb->posts}.ID";
1824                 }
1825
1826                 // Tags
1827                 if ( '' != $q['tag'] ) {
1828                         if ( strpos($q['tag'], ',') !== false ) {
1829                                 $tags = preg_split('/[,\s]+/', $q['tag']);
1830                                 foreach ( (array) $tags as $tag ) {
1831                                         $tag = sanitize_term_field('slug', $tag, 0, 'post_tag', 'db');
1832                                         $q['tag_slug__in'][] = $tag;
1833                                 }
1834                         } else if ( preg_match('/[+\s]+/', $q['tag']) || !empty($q['cat']) ) {
1835                                 $tags = preg_split('/[+\s]+/', $q['tag']);
1836                                 foreach ( (array) $tags as $tag ) {
1837                                         $tag = sanitize_term_field('slug', $tag, 0, 'post_tag', 'db');
1838                                         $q['tag_slug__and'][] = $tag;
1839                                 }
1840                         } else {
1841                                 $q['tag'] = sanitize_term_field('slug', $q['tag'], 0, 'post_tag', 'db');
1842                                 $q['tag_slug__in'][] = $q['tag'];
1843                         }
1844                 }
1845
1846                 if ( !empty($q['category__in']) || !empty($q['meta_key']) || !empty($q['tag__in']) || !empty($q['tag_slug__in']) ) {
1847                         $groupby = "{$wpdb->posts}.ID";
1848                 }
1849
1850                 if ( !empty($q['tag__in']) && empty($q['cat']) ) {
1851                         $join = " INNER JOIN $wpdb->term_relationships ON ($wpdb->posts.ID = $wpdb->term_relationships.object_id) INNER JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id) ";
1852                         $whichcat .= " AND $wpdb->term_taxonomy.taxonomy = 'post_tag' ";
1853                         $include_tags = "'" . implode("', '", $q['tag__in']) . "'";
1854                         $whichcat .= " AND $wpdb->term_taxonomy.term_id IN ($include_tags) ";
1855                         $reqtag = is_term( $q['tag__in'][0], 'post_tag' );
1856                         if ( !empty($reqtag) )
1857                                 $q['tag_id'] = $reqtag['term_id'];
1858                 }
1859
1860                 if ( !empty($q['tag_slug__in']) && empty($q['cat']) ) {
1861                         $join = " INNER JOIN $wpdb->term_relationships ON ($wpdb->posts.ID = $wpdb->term_relationships.object_id) INNER JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id) INNER JOIN $wpdb->terms ON ($wpdb->term_taxonomy.term_id = $wpdb->terms.term_id) ";
1862                         $whichcat .= " AND $wpdb->term_taxonomy.taxonomy = 'post_tag' ";
1863                         $include_tags = "'" . implode("', '", $q['tag_slug__in']) . "'";
1864                         $whichcat .= " AND $wpdb->terms.slug IN ($include_tags) ";
1865                         $reqtag = get_term_by( 'slug', $q['tag_slug__in'][0], 'post_tag' );
1866                         if ( !empty($reqtag) )
1867                                 $q['tag_id'] = $reqtag->term_id;
1868                 }
1869
1870                 if ( !empty($q['tag__not_in']) ) {
1871                         $tag_string = "'" . implode("', '", $q['tag__not_in']) . "'";
1872                         $whichcat .= " AND $wpdb->posts.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy = 'post_tag' AND tt.term_id IN ($tag_string) )";
1873                 }
1874
1875                 // Tag and slug intersections.
1876                 $intersections = array('category__and' => 'category', 'tag__and' => 'post_tag', 'tag_slug__and' => 'post_tag', 'tag__in' => 'post_tag', 'tag_slug__in' => 'post_tag');
1877                 $tagin = array('tag__in', 'tag_slug__in'); // These are used to make some exceptions below
1878                 foreach ($intersections as $item => $taxonomy) {
1879                         if ( empty($q[$item]) ) continue;
1880                         if ( in_array($item, $tagin) && empty($q['cat']) ) continue; // We should already have what we need if categories aren't being used
1881
1882                         if ( $item != 'category__and' ) {
1883                                 $reqtag = is_term( $q[$item][0], 'post_tag' );
1884                                 if ( !empty($reqtag) )
1885                                         $q['tag_id'] = $reqtag['term_id'];
1886                         }
1887
1888                         if ( in_array( $item, array('tag_slug__and', 'tag_slug__in' ) ) )
1889                                 $taxonomy_field = 'slug';
1890                         else
1891                                 $taxonomy_field = 'term_id';
1892
1893                         $q[$item] = array_unique($q[$item]);
1894                         $tsql = "SELECT p.ID FROM $wpdb->posts p INNER JOIN $wpdb->term_relationships tr ON (p.ID = tr.object_id) INNER JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) INNER JOIN $wpdb->terms t ON (tt.term_id = t.term_id)";
1895                         $tsql .= " WHERE tt.taxonomy = '$taxonomy' AND t.$taxonomy_field IN ('" . implode("', '", $q[$item]) . "')";
1896                         if ( !in_array($item, $tagin) ) { // This next line is only helpful if we are doing an and relationship
1897                                 $tsql .= " GROUP BY p.ID HAVING count(p.ID) = " . count($q[$item]);
1898                         }
1899                         $post_ids = $wpdb->get_col($tsql);
1900
1901                         if ( count($post_ids) )
1902                                 $whichcat .= " AND $wpdb->posts.ID IN (" . implode(', ', $post_ids) . ") ";
1903                         else {
1904                                 $whichcat = " AND 0 = 1";
1905                                 break;
1906                         }
1907                 }
1908
1909                 // Taxonomies
1910                 if ( $this->is_tax ) {
1911                         if ( '' != $q['taxonomy'] ) {
1912                                 $taxonomy = $q['taxonomy'];
1913                                 $tt[$taxonomy] = $q['term'];
1914                                 $terms = get_terms($q['taxonomy'], array('slug'=>$q['term']));
1915                         } else {
1916                                 foreach ( $GLOBALS['wp_taxonomies'] as $taxonomy => $t ) {
1917                                         if ( $t->query_var && '' != $q[$t->query_var] ) {
1918                                                 $terms = get_terms($taxonomy, array('slug'=>$q[$t->query_var]));
1919                                                 if ( !is_wp_error($terms) )
1920                                                         break;
1921                                         }
1922                                 }
1923                         }
1924                         if ( is_wp_error($terms) || empty($terms) ) {
1925                                 $whichcat = " AND 0 ";
1926                         } else {
1927                                 foreach ( $terms as $term )
1928                                         $term_ids[] = $term->term_id;
1929                                 $post_ids = get_objects_in_term($term_ids, $taxonomy);
1930                                 if ( !is_wp_error($post_ids) && count($post_ids) ) {
1931                                         $whichcat .= " AND $wpdb->posts.ID IN (" . implode(', ', $post_ids) . ") ";
1932                                         $post_type = 'any';
1933                                         $q['post_status'] = 'publish';
1934                                         $post_status_join = true;
1935                                 } else {
1936                                         $whichcat = " AND 0 ";
1937                                 }
1938                         }
1939                 }
1940
1941                 // Author/user stuff
1942
1943                 if ( empty($q['author']) || ($q['author'] == '0') ) {
1944                         $whichauthor='';
1945                 } else {
1946                         $q['author'] = ''.urldecode($q['author']).'';
1947                         $q['author'] = addslashes_gpc($q['author']);
1948                         if (strpos($q['author'], '-') !== false) {
1949                                 $eq = '!=';
1950                                 $andor = 'AND';
1951                                 $q['author'] = explode('-', $q['author']);
1952                                 $q['author'] = '' . absint($q['author'][1]);
1953                         } else {
1954                                 $eq = '=';
1955                                 $andor = 'OR';
1956                         }
1957                         $author_array = preg_split('/[,\s]+/', $q['author']);
1958                         $whichauthor .= " AND ($wpdb->posts.post_author ".$eq.' '.absint($author_array[0]);
1959                         for ($i = 1; $i < (count($author_array)); $i = $i + 1) {
1960                                 $whichauthor .= ' '.$andor." $wpdb->posts.post_author ".$eq.' '.absint($author_array[$i]);
1961                         }
1962                         $whichauthor .= ')';
1963                 }
1964
1965                 // Author stuff for nice URLs
1966
1967                 if ('' != $q['author_name']) {
1968                         if (strpos($q['author_name'], '/') !== false) {
1969                                 $q['author_name'] = explode('/',$q['author_name']);
1970                                 if ($q['author_name'][count($q['author_name'])-1]) {
1971                                         $q['author_name'] = $q['author_name'][count($q['author_name'])-1];#no trailing slash
1972                                 } else {
1973                                         $q['author_name'] = $q['author_name'][count($q['author_name'])-2];#there was a trailling slash
1974                                 }
1975                         }
1976                         $q['author_name'] = sanitize_title($q['author_name']);
1977                         $q['author'] = $wpdb->get_var("SELECT ID FROM $wpdb->users WHERE user_nicename='".$q['author_name']."'");
1978                         $q['author'] = get_user_by('slug', $q['author_name']);
1979                         if ( $q['author'] )
1980                                 $q['author'] = $q['author']->ID;
1981                         $whichauthor .= " AND ($wpdb->posts.post_author = ".absint($q['author']).')';
1982                 }
1983
1984                 // MIME-Type stuff for attachment browsing
1985
1986                 if ( isset($q['post_mime_type']) && '' != $q['post_mime_type'] )
1987                         $whichmimetype = wp_post_mime_type_where($q['post_mime_type']);
1988
1989                 $where .= $search.$whichcat.$whichauthor.$whichmimetype;
1990
1991                 if ( empty($q['order']) || ((strtoupper($q['order']) != 'ASC') && (strtoupper($q['order']) != 'DESC')) )
1992                         $q['order'] = 'DESC';
1993
1994                 // Order by
1995                 if ( empty($q['orderby']) ) {
1996                         $q['orderby'] = "$wpdb->posts.post_date ".$q['order'];
1997                 } elseif ( 'none' == $q['orderby'] ) {
1998                         $q['orderby'] = '';
1999                 } else {
2000                         // Used to filter values
2001                         $allowed_keys = array('author', 'date', 'title', 'modified', 'menu_order', 'parent', 'ID', 'rand', 'comment_count');
2002                         if ( !empty($q['meta_key']) ) {
2003                                 $allowed_keys[] = $q['meta_key'];
2004                                 $allowed_keys[] = 'meta_value';
2005                         }
2006                         $q['orderby'] = urldecode($q['orderby']);
2007                         $q['orderby'] = addslashes_gpc($q['orderby']);
2008                         $orderby_array = explode(' ',$q['orderby']);
2009                         if ( empty($orderby_array) )
2010                                 $orderby_array[] = $q['orderby'];
2011                         $q['orderby'] = '';
2012                         for ($i = 0; $i < count($orderby_array); $i++) {
2013                                 // Only allow certain values for safety
2014                                 $orderby = $orderby_array[$i];
2015                                 switch ($orderby) {
2016                                         case 'menu_order':
2017                                                 break;
2018                                         case 'ID':
2019                                                 $orderby = "$wpdb->posts.ID";
2020                                                 break;
2021                                         case 'rand':
2022                                                 $orderby = 'RAND()';
2023                                                 break;
2024                                         case $q['meta_key']:
2025                                         case 'meta_value':
2026                                                 $orderby = "$wpdb->postmeta.meta_value";
2027                                                 break;
2028                                         case 'comment_count':
2029                                                 $orderby = "$wpdb->posts.comment_count";
2030                                                 break;
2031                                         default:
2032                                                 $orderby = "$wpdb->posts.post_" . $orderby;
2033                                 }
2034                                 if ( in_array($orderby_array[$i], $allowed_keys) )
2035                                         $q['orderby'] .= (($i == 0) ? '' : ',') . $orderby;
2036                         }
2037                         // append ASC or DESC at the end
2038                         if ( !empty($q['orderby']))
2039                                 $q['orderby'] .= " {$q['order']}";
2040
2041                         if ( empty($q['orderby']) )
2042                                 $q['orderby'] = "$wpdb->posts.post_date ".$q['order'];
2043                 }
2044
2045                 if ( is_array($post_type) )
2046                         $post_type_cap = 'multiple_post_type';
2047                 else
2048                         $post_type_cap = $post_type;
2049
2050                 $exclude_post_types = '';
2051                 foreach ( get_post_types( array('exclude_from_search' => true) ) as $_wp_post_type )
2052                         $exclude_post_types .= $wpdb->prepare(" AND $wpdb->posts.post_type != %s", $_wp_post_type);
2053
2054                 if ( 'any' == $post_type ) {
2055                         $where .= $exclude_post_types;
2056                 } elseif ( !empty( $post_type ) && is_array( $post_type ) ) {
2057                         $where .= " AND $wpdb->posts.post_type IN ('" . join("', '", $post_type) . "')"; 
2058                 } elseif ( ! empty( $post_type ) ) {
2059                         $where .= " AND $wpdb->posts.post_type = '$post_type'";
2060                 } elseif ( $this->is_attachment ) {
2061                         $where .= " AND $wpdb->posts.post_type = 'attachment'";
2062                         $post_type_cap = 'post';
2063                 } elseif ($this->is_page) {
2064                         $where .= " AND $wpdb->posts.post_type = 'page'";
2065                         $post_type_cap = 'page';
2066                 } else {
2067                         $where .= " AND $wpdb->posts.post_type = 'post'";
2068                         $post_type_cap = 'post';
2069                 }
2070
2071                 if ( isset($q['post_status']) && '' != $q['post_status'] ) {
2072                         $statuswheres = array();
2073                         $q_status = explode(',', $q['post_status']);
2074                         $r_status = array();
2075                         $p_status = array();
2076                         if ( $q['post_status'] == 'any' ) {
2077                                 // @todo Use register_post_status() data to determine which states should be excluded.
2078                                 $r_status[] = "$wpdb->posts.post_status <> 'trash'";
2079                         } else {
2080                                 if ( in_array( 'draft'  , $q_status ) )
2081                                         $r_status[] = "$wpdb->posts.post_status = 'draft'";
2082                                 if ( in_array( 'pending', $q_status ) )
2083                                         $r_status[] = "$wpdb->posts.post_status = 'pending'";
2084                                 if ( in_array( 'future' , $q_status ) )
2085                                         $r_status[] = "$wpdb->posts.post_status = 'future'";
2086                                 if ( in_array( 'inherit' , $q_status ) )
2087                                         $r_status[] = "$wpdb->posts.post_status = 'inherit'";
2088                                 if ( in_array( 'private', $q_status ) )
2089                                         $p_status[] = "$wpdb->posts.post_status = 'private'";
2090                                 if ( in_array( 'publish', $q_status ) )
2091                                         $r_status[] = "$wpdb->posts.post_status = 'publish'";
2092                                 if ( in_array( 'trash', $q_status ) )
2093                                         $r_status[] = "$wpdb->posts.post_status = 'trash'";
2094                         }
2095
2096                         if ( empty($q['perm'] ) || 'readable' != $q['perm'] ) {
2097                                 $r_status = array_merge($r_status, $p_status);
2098                                 unset($p_status);
2099                         }
2100
2101                         if ( !empty($r_status) ) {
2102                                 if ( !empty($q['perm'] ) && 'editable' == $q['perm'] && !current_user_can("edit_others_{$post_type_cap}s") )
2103                                         $statuswheres[] = "($wpdb->posts.post_author = $user_ID " .  "AND (" . join( ' OR ', $r_status ) . "))";
2104                                 else
2105                                         $statuswheres[] = "(" . join( ' OR ', $r_status ) . ")";
2106                         }
2107                         if ( !empty($p_status) ) {
2108                                 if ( !empty($q['perm'] ) && 'readable' == $q['perm'] && !current_user_can("read_private_{$post_type_cap}s") )
2109                                         $statuswheres[] = "($wpdb->posts.post_author = $user_ID " .  "AND (" . join( ' OR ', $p_status ) . "))";
2110                                 else
2111                                         $statuswheres[] = "(" . join( ' OR ', $p_status ) . ")";
2112                         }
2113                         if ( $post_status_join ) {
2114                                 $join .= " LEFT JOIN $wpdb->posts AS p2 ON ($wpdb->posts.post_parent = p2.ID) ";
2115                                 foreach ( $statuswheres as $index => $statuswhere )
2116                                         $statuswheres[$index] = "($statuswhere OR ($wpdb->posts.post_status = 'inherit' AND " . str_replace($wpdb->posts, 'p2', $statuswhere) . "))";
2117                         }
2118                         foreach ( $statuswheres as $statuswhere )
2119                                 $where .= " AND $statuswhere";
2120                 } elseif ( !$this->is_singular ) {
2121                         $where .= " AND ($wpdb->posts.post_status = 'publish'";
2122
2123                         if ( is_admin() )
2124                                 $where .= " OR $wpdb->posts.post_status = 'future' OR $wpdb->posts.post_status = 'draft' OR $wpdb->posts.post_status = 'pending'";
2125
2126                         if ( is_user_logged_in() ) {
2127                                 $where .= current_user_can( "read_private_{$post_type_cap}s" ) ? " OR $wpdb->posts.post_status = 'private'" : " OR $wpdb->posts.post_author = $user_ID AND $wpdb->posts.post_status = 'private'";
2128                         }
2129
2130                         $where .= ')';
2131                 }
2132
2133                 // postmeta queries
2134                 if ( ! empty($q['meta_key']) || ! empty($q['meta_value']) )
2135                         $join .= " JOIN $wpdb->postmeta ON ($wpdb->posts.ID = $wpdb->postmeta.post_id) ";
2136                 if ( ! empty($q['meta_key']) )
2137                         $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_key = %s ", $q['meta_key']);
2138                 if ( ! empty($q['meta_value']) ) {
2139                         if ( ! isset($q['meta_compare']) || empty($q['meta_compare']) || ! in_array($q['meta_compare'], array('=', '!=', '>', '>=', '<', '<=')) )
2140                                 $q['meta_compare'] = '=';
2141
2142                         $where .= $wpdb->prepare("AND $wpdb->postmeta.meta_value {$q['meta_compare']} %s ", $q['meta_value']);
2143                 }
2144
2145                 // Apply filters on where and join prior to paging so that any
2146                 // manipulations to them are reflected in the paging by day queries.
2147                 if ( !$q['suppress_filters'] ) {
2148                         $where = apply_filters('posts_where', $where);
2149                         $join = apply_filters('posts_join', $join);
2150                 }
2151
2152                 // Paging
2153                 if ( empty($q['nopaging']) && !$this->is_singular ) {
2154                         $page = absint($q['paged']);
2155                         if (empty($page)) {
2156                                 $page = 1;
2157                         }
2158
2159                         if ( empty($q['offset']) ) {
2160                                 $pgstrt = '';
2161                                 $pgstrt = ($page - 1) * $q['posts_per_page'] . ', ';
2162                                 $limits = 'LIMIT '.$pgstrt.$q['posts_per_page'];
2163                         } else { // we're ignoring $page and using 'offset'
2164                                 $q['offset'] = absint($q['offset']);
2165                                 $pgstrt = $q['offset'] . ', ';
2166                                 $limits = 'LIMIT ' . $pgstrt . $q['posts_per_page'];
2167                         }
2168                 }
2169
2170                 // Comments feeds
2171                 if ( $this->is_comment_feed && ( $this->is_archive || $this->is_search || !$this->is_singular ) ) {
2172                         if ( $this->is_archive || $this->is_search ) {
2173                                 $cjoin = "JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID = $wpdb->posts.ID) $join ";
2174                                 $cwhere = "WHERE comment_approved = '1' $where";
2175                                 $cgroupby = "$wpdb->comments.comment_id";
2176                         } else { // Other non singular e.g. front
2177                                 $cjoin = "JOIN $wpdb->posts ON ( $wpdb->comments.comment_post_ID = $wpdb->posts.ID )";
2178                                 $cwhere = "WHERE post_status = 'publish' AND comment_approved = '1'";
2179                                 $cgroupby = '';
2180                         }
2181
2182                         if ( !$q['suppress_filters'] ) {
2183                                 $cjoin = apply_filters('comment_feed_join', $cjoin);
2184                                 $cwhere = apply_filters('comment_feed_where', $cwhere);
2185                                 $cgroupby = apply_filters('comment_feed_groupby', $cgroupby);
2186                                 $corderby = apply_filters('comment_feed_orderby', 'comment_date_gmt DESC');
2187                                 $climits = apply_filters('comment_feed_limits', 'LIMIT ' . get_option('posts_per_rss'));
2188                         }
2189                         $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
2190                         $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';
2191
2192                         $this->comments = (array) $wpdb->get_results("SELECT $distinct $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere $cgroupby $corderby $climits");
2193                         $this->comment_count = count($this->comments);
2194
2195                         $post_ids = array();
2196
2197                         foreach ($this->comments as $comment)
2198                                 $post_ids[] = (int) $comment->comment_post_ID;
2199
2200                         $post_ids = join(',', $post_ids);
2201                         $join = '';
2202                         if ( $post_ids )
2203                                 $where = "AND $wpdb->posts.ID IN ($post_ids) ";
2204                         else
2205                                 $where = "AND 0";
2206                 }
2207
2208                 $orderby = $q['orderby'];
2209
2210                 // Apply post-paging filters on where and join.  Only plugins that
2211                 // manipulate paging queries should use these hooks.
2212                 if ( !$q['suppress_filters'] ) {
2213                         $where = apply_filters('posts_where_paged', $where);
2214                         $groupby = apply_filters('posts_groupby', $groupby);
2215                         $join = apply_filters('posts_join_paged', $join);
2216                         $orderby = apply_filters('posts_orderby', $orderby);
2217                         $distinct = apply_filters('posts_distinct', $distinct);
2218                         $limits = apply_filters( 'post_limits', $limits );
2219
2220                         $fields = apply_filters('posts_fields', $fields);
2221                 }
2222
2223                 // Announce current selection parameters.  For use by caching plugins.
2224                 do_action( 'posts_selection', $where . $groupby . $orderby . $limits . $join );
2225
2226                 // Filter again for the benefit of caching plugins.  Regular plugins should use the hooks above.
2227                 if ( !$q['suppress_filters'] ) {
2228                         $where = apply_filters('posts_where_request', $where);
2229                         $groupby = apply_filters('posts_groupby_request', $groupby);
2230                         $join = apply_filters('posts_join_request', $join);
2231                         $orderby = apply_filters('posts_orderby_request', $orderby);
2232                         $distinct = apply_filters('posts_distinct_request', $distinct);
2233                         $fields = apply_filters('posts_fields_request', $fields);
2234                         $limits = apply_filters( 'post_limits_request', $limits );
2235                 }
2236
2237                 if ( ! empty($groupby) )
2238                         $groupby = 'GROUP BY ' . $groupby;
2239                 if ( !empty( $orderby ) )
2240                         $orderby = 'ORDER BY ' . $orderby;
2241                 $found_rows = '';
2242                 if ( !empty($limits) )
2243                         $found_rows = 'SQL_CALC_FOUND_ROWS';
2244
2245                 $this->request = " SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
2246                 if ( !$q['suppress_filters'] )
2247                         $this->request = apply_filters('posts_request', $this->request);
2248
2249                 $this->posts = $wpdb->get_results($this->request);
2250                 // Raw results filter.  Prior to status checks.
2251                 if ( !$q['suppress_filters'] )
2252                         $this->posts = apply_filters('posts_results', $this->posts);
2253
2254                 if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) {
2255                         $cjoin = apply_filters('comment_feed_join', '');
2256                         $cwhere = apply_filters('comment_feed_where', "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'");
2257                         $cgroupby = apply_filters('comment_feed_groupby', '');
2258                         $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
2259                         $corderby = apply_filters('comment_feed_orderby', 'comment_date_gmt DESC');
2260                         $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';
2261                         $climits = apply_filters('comment_feed_limits', 'LIMIT ' . get_option('posts_per_rss'));
2262                         $comments_request = "SELECT $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere $cgroupby $corderby $climits";
2263                         $this->comments = $wpdb->get_results($comments_request);
2264                         $this->comment_count = count($this->comments);
2265                 }
2266
2267                 if ( !empty($limits) ) {
2268                         $found_posts_query = apply_filters( 'found_posts_query', 'SELECT FOUND_ROWS()' );
2269                         $this->found_posts = $wpdb->get_var( $found_posts_query );
2270                         $this->found_posts = apply_filters( 'found_posts', $this->found_posts );
2271                         $this->max_num_pages = ceil($this->found_posts / $q['posts_per_page']);
2272                 }
2273
2274                 // Check post status to determine if post should be displayed.
2275                 if ( !empty($this->posts) && ($this->is_single || $this->is_page) ) {
2276                         $status = get_post_status($this->posts[0]);
2277                         //$type = get_post_type($this->posts[0]);
2278                         if ( ('publish' != $status) ) {
2279                                 if ( ! is_user_logged_in() ) {
2280                                         // User must be logged in to view unpublished posts.
2281                                         $this->posts = array();
2282                                 } else {
2283                                         if  (in_array($status, array('draft', 'pending')) ) {
2284                                                 // User must have edit permissions on the draft to preview.
2285                                                 if (! current_user_can("edit_$post_type_cap", $this->posts[0]->ID)) {
2286                                                         $this->posts = array();
2287                                                 } else {
2288                                                         $this->is_preview = true;
2289                                                         $this->posts[0]->post_date = current_time('mysql');
2290                                                 }
2291                                         }  else if ('future' == $status) {
2292                                                 $this->is_preview = true;
2293                                                 if (!current_user_can("edit_$post_type_cap", $this->posts[0]->ID)) {
2294                                                         $this->posts = array ( );
2295                                                 }
2296                                         } else {
2297                                                 if (! current_user_can("read_$post_type_cap", $this->posts[0]->ID))
2298                                                         $this->posts = array();
2299                                         }
2300                                 }
2301                         }
2302
2303                         if ( $this->is_preview && current_user_can( "edit_{$post_type_cap}", $this->posts[0]->ID ) )
2304                                 $this->posts[0] = apply_filters('the_preview', $this->posts[0]);
2305                 }
2306
2307                 // Put sticky posts at the top of the posts array
2308                 $sticky_posts = get_option('sticky_posts');
2309                 if ( $this->is_home && $page <= 1 && is_array($sticky_posts) && !empty($sticky_posts) && !$q['caller_get_posts'] ) {
2310                         $num_posts = count($this->posts);
2311                         $sticky_offset = 0;
2312                         // Loop over posts and relocate stickies to the front.
2313                         for ( $i = 0; $i < $num_posts; $i++ ) {
2314                                 if ( in_array($this->posts[$i]->ID, $sticky_posts) ) {
2315                                         $sticky_post = $this->posts[$i];
2316                                         // Remove sticky from current position
2317                                         array_splice($this->posts, $i, 1);
2318                                         // Move to front, after other stickies
2319                                         array_splice($this->posts, $sticky_offset, 0, array($sticky_post));
2320                                         // Increment the sticky offset.  The next sticky will be placed at this offset.
2321                                         $sticky_offset++;
2322                                         // Remove post from sticky posts array
2323                                         $offset = array_search($sticky_post->ID, $sticky_posts);
2324                                         array_splice($sticky_posts, $offset, 1);
2325                                 }
2326                         }
2327
2328                         // Fetch sticky posts that weren't in the query results
2329                         if ( !empty($sticky_posts) ) {
2330                                 $stickies__in = implode(',', array_map( 'absint', $sticky_posts ));
2331                                 // honor post type(s) if not set to any
2332                                 $stickies_where = '';
2333                                 if ( 'any' != $post_type && '' != $post_type ) {
2334                                         if ( is_array( $post_type ) ) {
2335                                                 $post_types = join( "', '", $post_type );
2336                                         } else {
2337                                                 $post_types = $post_type;
2338                                         }
2339                                         $stickies_where = "AND $wpdb->posts.post_type IN ('" . $post_types . "')";
2340                                 }
2341                                 $stickies = $wpdb->get_results( "SELECT * FROM $wpdb->posts WHERE $wpdb->posts.ID IN ($stickies__in) $stickies_where" );
2342                                 /** @todo Make sure post is published or viewable by the current user */
2343                                 foreach ( $stickies as $sticky_post ) {
2344                                         if ( 'publish' != $sticky_post->post_status )
2345                                                 continue;
2346                                                 array_splice($this->posts, $sticky_offset, 0, array($sticky_post));
2347                                                 $sticky_offset++;
2348                                 }
2349                         }
2350                 }
2351
2352                 if ( !$q['suppress_filters'] )
2353                         $this->posts = apply_filters('the_posts', $this->posts);
2354
2355                 $this->post_count = count($this->posts);
2356
2357                 // Sanitize before caching so it'll only get done once
2358                 for ($i = 0; $i < $this->post_count; $i++) {
2359                         $this->posts[$i] = sanitize_post($this->posts[$i], 'raw');
2360                 }
2361
2362                 update_post_caches($this->posts);
2363
2364                 if ($this->post_count > 0) {
2365                         $this->post = $this->posts[0];
2366                 }
2367
2368                 return $this->posts;
2369         }
2370
2371         /**
2372          * Setup the next post and iterate current post index.
2373          *
2374          * @since 1.5.0
2375          * @access public
2376          *
2377          * @return object Next post.
2378          */
2379         function next_post() {
2380
2381                 $this->current_post++;
2382
2383                 $this->post = $this->posts[$this->current_post];
2384                 return $this->post;
2385         }
2386
2387         /**
2388          * Sets up the current post.
2389          *
2390          * Retrieves the next post, sets up the post, sets the 'in the loop'
2391          * property to true.
2392          *
2393          * @since 1.5.0
2394          * @access public
2395          * @uses $post
2396          * @uses do_action_ref_array() Calls 'loop_start' if loop has just started
2397          */
2398         function the_post() {
2399                 global $post;
2400                 $this->in_the_loop = true;
2401
2402                 if ( $this->current_post == -1 ) // loop has just started
2403                         do_action_ref_array('loop_start', array(&$this));
2404
2405                 $post = $this->next_post();
2406                 setup_postdata($post);
2407         }
2408
2409         /**
2410          * Whether there are more posts available in the loop.
2411          *
2412          * Calls action 'loop_end', when the loop is complete.
2413          *
2414          * @since 1.5.0
2415          * @access public
2416          * @uses do_action_ref_array() Calls 'loop_end' if loop is ended
2417          *
2418          * @return bool True if posts are available, false if end of loop.
2419          */
2420         function have_posts() {
2421                 if ($this->current_post + 1 < $this->post_count) {
2422                         return true;
2423                 } elseif ($this->current_post + 1 == $this->post_count && $this->post_count > 0) {
2424                         do_action_ref_array('loop_end', array(&$this));
2425                         // Do some cleaning up after the loop
2426                         $this->rewind_posts();
2427                 }
2428
2429                 $this->in_the_loop = false;
2430                 return false;
2431         }
2432
2433         /**
2434          * Rewind the posts and reset post index.
2435          *
2436          * @since 1.5.0
2437          * @access public
2438          */
2439         function rewind_posts() {
2440                 $this->current_post = -1;
2441                 if ($this->post_count > 0) {
2442                         $this->post = $this->posts[0];
2443                 }
2444         }
2445
2446         /**
2447          * Iterate current comment index and return comment object.
2448          *
2449          * @since 2.2.0
2450          * @access public
2451          *
2452          * @return object Comment object.
2453          */
2454         function next_comment() {
2455                 $this->current_comment++;
2456
2457                 $this->comment = $this->comments[$this->current_comment];
2458                 return $this->comment;
2459         }
2460
2461         /**
2462          * Sets up the current comment.
2463          *
2464          * @since 2.2.0
2465          * @access public
2466          * @global object $comment Current comment.
2467          * @uses do_action() Calls 'comment_loop_start' hook when first comment is processed.
2468          */
2469         function the_comment() {
2470                 global $comment;
2471
2472                 $comment = $this->next_comment();
2473
2474                 if ($this->current_comment == 0) {
2475                         do_action('comment_loop_start');
2476                 }
2477         }
2478
2479         /**
2480          * Whether there are more comments available.
2481          *
2482          * Automatically rewinds comments when finished.
2483          *
2484          * @since 2.2.0
2485          * @access public
2486          *
2487          * @return bool True, if more comments. False, if no more posts.
2488          */
2489         function have_comments() {
2490                 if ($this->current_comment + 1 < $this->comment_count) {
2491                         return true;
2492                 } elseif ($this->current_comment + 1 == $this->comment_count) {
2493                         $this->rewind_comments();
2494                 }
2495
2496                 return false;
2497         }
2498
2499         /**
2500          * Rewind the comments, resets the comment index and comment to first.
2501          *
2502          * @since 2.2.0
2503          * @access public
2504          */
2505         function rewind_comments() {
2506                 $this->current_comment = -1;
2507                 if ($this->comment_count > 0) {
2508                         $this->comment = $this->comments[0];
2509                 }
2510         }
2511
2512         /**
2513          * Sets up the WordPress query by parsing query string.
2514          *
2515          * @since 1.5.0
2516          * @access public
2517          *
2518          * @param string $query URL query string.
2519          * @return array List of posts.
2520          */
2521         function &query($query) {
2522                 $this->parse_query($query);
2523                 return $this->get_posts();
2524         }
2525
2526         /**
2527          * Retrieve queried object.
2528          *
2529          * If queried object is not set, then the queried object will be set from
2530          * the category, tag, taxonomy, posts page, single post, page, or author
2531          * query variable. After it is set up, it will be returned.
2532          *
2533          * @since 1.5.0
2534          * @access public
2535          *
2536          * @return object
2537          */
2538         function get_queried_object() {
2539                 if (isset($this->queried_object)) {
2540                         return $this->queried_object;
2541                 }
2542
2543                 $this->queried_object = NULL;
2544                 $this->queried_object_id = 0;
2545
2546                 if ($this->is_category) {
2547                         $cat = $this->get('cat');
2548                         $category = &get_category($cat);
2549                         if ( is_wp_error( $category ) )
2550                                 return NULL;
2551                         $this->queried_object = &$category;
2552                         $this->queried_object_id = (int) $cat;
2553                 } else if ($this->is_tag) {
2554                         $tag_id = $this->get('tag_id');
2555                         $tag = &get_term($tag_id, 'post_tag');
2556                         if ( is_wp_error( $tag ) )
2557                                 return NULL;
2558                         $this->queried_object = &$tag;
2559                         $this->queried_object_id = (int) $tag_id;
2560                 } else if ($this->is_tax) {
2561                         $tax = $this->get('taxonomy');
2562                         $slug = $this->get('term');
2563                         $term = &get_terms($tax, array('slug'=>$slug));
2564                         if ( is_wp_error($term) || empty($term) )
2565                                 return NULL;
2566                         $term = $term[0];
2567                         $this->queried_object = $term;
2568                         $this->queried_object_id = $term->term_id;
2569                 } else if ($this->is_posts_page) {
2570                         $this->queried_object = & get_page(get_option('page_for_posts'));
2571                         $this->queried_object_id = (int) $this->queried_object->ID;
2572                 } else if ($this->is_single) {
2573                         $this->queried_object = $this->post;
2574                         $this->queried_object_id = (int) $this->post->ID;
2575                 } else if ($this->is_page) {
2576                         $this->queried_object = $this->post;
2577                         $this->queried_object_id = (int) $this->post->ID;
2578                 } else if ($this->is_author) {
2579                         $author_id = (int) $this->get('author');
2580                         $author = get_userdata($author_id);
2581                         $this->queried_object = $author;
2582                         $this->queried_object_id = $author_id;
2583                 }
2584
2585                 return $this->queried_object;
2586         }
2587
2588         /**
2589          * Retrieve ID of the current queried object.
2590          *
2591          * @since 1.5.0
2592          * @access public
2593          *
2594          * @return int
2595          */
2596         function get_queried_object_id() {
2597                 $this->get_queried_object();
2598
2599                 if (isset($this->queried_object_id)) {
2600                         return $this->queried_object_id;
2601                 }
2602
2603                 return 0;
2604         }
2605
2606         /**
2607          * PHP4 type constructor.
2608          *
2609          * Sets up the WordPress query, if parameter is not empty.
2610          *
2611          * @since 1.5.0
2612          * @access public
2613          *
2614          * @param string $query URL query string.
2615          * @return WP_Query
2616          */
2617         function WP_Query ($query = '') {
2618                 if (! empty($query)) {
2619                         $this->query($query);
2620                 }
2621         }
2622 }
2623
2624 /**
2625  * Redirect old slugs to the correct permalink.
2626  *
2627  * Attempts to find the current slug from the past slugs.
2628  *
2629  * @since 2.1.0
2630  * @uses $wp_query
2631  * @uses $wpdb
2632  *
2633  * @return null If no link is found, null is returned.
2634  */
2635 function wp_old_slug_redirect () {
2636         global $wp_query;
2637         if ( is_404() && '' != $wp_query->query_vars['name'] ) :
2638                 global $wpdb;
2639
2640                 $query = "SELECT post_id FROM $wpdb->postmeta, $wpdb->posts WHERE ID = post_id AND meta_key = '_wp_old_slug' AND meta_value='" . $wp_query->query_vars['name'] . "'";
2641
2642                 // if year, monthnum, or day have been specified, make our query more precise
2643                 // just in case there are multiple identical _wp_old_slug values
2644                 if ( '' != $wp_query->query_vars['year'] )
2645                         $query .= " AND YEAR(post_date) = '{$wp_query->query_vars['year']}'";
2646                 if ( '' != $wp_query->query_vars['monthnum'] )
2647                         $query .= " AND MONTH(post_date) = '{$wp_query->query_vars['monthnum']}'";
2648                 if ( '' != $wp_query->query_vars['day'] )
2649                         $query .= " AND DAYOFMONTH(post_date) = '{$wp_query->query_vars['day']}'";
2650
2651                 $id = (int) $wpdb->get_var($query);
2652
2653                 if ( !$id )
2654                         return;
2655
2656                 $link = get_permalink($id);
2657
2658                 if ( !$link )
2659                         return;
2660
2661                 wp_redirect($link, '301'); // Permanent redirect
2662                 exit;
2663         endif;
2664 }
2665
2666 /**
2667  * Setup global post data.
2668  *
2669  * @since 1.5.0
2670  *
2671  * @param object $post Post data.
2672  * @uses do_action_ref_array() Calls 'the_post'
2673  * @return bool True when finished.
2674  */
2675 function setup_postdata($post) {
2676         global $id, $authordata, $day, $currentmonth, $page, $pages, $multipage, $more, $numpages;
2677
2678         $id = (int) $post->ID;
2679
2680         $authordata = get_userdata($post->post_author);
2681
2682         $day = mysql2date('d.m.y', $post->post_date, false);
2683         $currentmonth = mysql2date('m', $post->post_date, false);
2684         $numpages = 1;
2685         $page = get_query_var('page');
2686         if ( !$page )
2687                 $page = 1;
2688         if ( is_single() || is_page() || is_feed() )
2689                 $more = 1;
2690         $content = $post->post_content;
2691         if ( strpos( $content, '<!--nextpage-->' ) ) {
2692                 if ( $page > 1 )
2693                         $more = 1;
2694                 $multipage = 1;
2695                 $content = str_replace("\n<!--nextpage-->\n", '<!--nextpage-->', $content);
2696                 $content = str_replace("\n<!--nextpage-->", '<!--nextpage-->', $content);
2697                 $content = str_replace("<!--nextpage-->\n", '<!--nextpage-->', $content);
2698                 $pages = explode('<!--nextpage-->', $content);
2699                 $numpages = count($pages);
2700         } else {
2701                 $pages[0] = $post->post_content;
2702                 $multipage = 0;
2703         }
2704
2705         do_action_ref_array('the_post', array(&$post));
2706
2707         return true;
2708 }
2709
2710 ?>