3 * Comment template functions
5 * These functions are meant to live inside of the WordPress loop.
12 * Retrieve the author of the current comment.
14 * If the comment has an empty comment_author field, then 'Anonymous' person is
18 * @uses apply_filters() Calls 'get_comment_author' hook on the comment author
20 * @return string The comment author
22 function get_comment_author() {
24 if ( empty($comment->comment_author) )
25 $author = __('Anonymous');
27 $author = $comment->comment_author;
28 return apply_filters('get_comment_author', $author);
32 * Displays the author of the current comment.
35 * @uses apply_filters() Calls 'comment_author' on comment author before displaying
37 function comment_author() {
38 $author = apply_filters('comment_author', get_comment_author() );
43 * Retrieve the email of the author of the current comment.
46 * @uses apply_filters() Calls the 'get_comment_author_email' hook on the comment author email
49 * @return string The current comment author's email
51 function get_comment_author_email() {
53 return apply_filters('get_comment_author_email', $comment->comment_author_email);
57 * Display the email of the author of the current global $comment.
59 * Care should be taken to protect the email address and assure that email
60 * harvesters do not capture your commentors' email address. Most assume that
61 * their email address will not appear in raw form on the blog. Doing so will
62 * enable anyone, including those that people don't want to get the email
63 * address and use it for their own means good and bad.
66 * @uses apply_filters() Calls 'author_email' hook on the author email
68 function comment_author_email() {
69 echo apply_filters('author_email', get_comment_author_email() );
73 * Display the html email link to the author of the current comment.
75 * Care should be taken to protect the email address and assure that email
76 * harvesters do not capture your commentors' email address. Most assume that
77 * their email address will not appear in raw form on the blog. Doing so will
78 * enable anyone, including those that people don't want to get the email
79 * address and use it for their own means good and bad.
82 * @uses apply_filters() Calls 'comment_email' hook for the display of the comment author's email
83 * @global object $comment The current Comment row object
85 * @param string $linktext The text to display instead of the comment author's email address
86 * @param string $before The text or HTML to display before the email link.
87 * @param string $after The text or HTML to display after the email link.
89 function comment_author_email_link($linktext='', $before='', $after='') {
91 $email = apply_filters('comment_email', $comment->comment_author_email);
92 if ((!empty($email)) && ($email != '@')) {
93 $display = ($linktext != '') ? $linktext : $email;
95 echo "<a href='mailto:$email'>$display</a>";
101 * Retrieve the html link to the url of the author of the current comment.
104 * @uses apply_filters() Calls 'get_comment_author_link' hook on the complete link HTML or author
106 * @return string Comment Author name or HTML link for author's URL
108 function get_comment_author_link() {
109 /** @todo Only call these functions when they are needed. Include in if... else blocks */
110 $url = get_comment_author_url();
111 $author = get_comment_author();
113 if ( empty( $url ) || 'http://' == $url )
116 $return = "<a href='$url' rel='external nofollow'>$author</a>";
117 return apply_filters('get_comment_author_link', $return);
121 * Display the html link to the url of the author of the current comment.
124 * @see get_comment_author_link() Echos result
126 function comment_author_link() {
127 echo get_comment_author_link();
131 * Retrieve the IP address of the author of the current comment.
135 * @uses apply_filters()
139 function get_comment_author_IP() {
141 return apply_filters('get_comment_author_IP', $comment->comment_author_IP);
145 * Display the IP address of the author of the current comment.
148 * @see get_comment_author_IP() Echos Result
150 function comment_author_IP() {
151 echo get_comment_author_IP();
155 * Retrieve the url of the author of the current comment.
158 * @uses apply_filters() Calls 'get_comment_author_url' hook on the comment author's URL
162 function get_comment_author_url() {
164 return apply_filters('get_comment_author_url', $comment->comment_author_url);
168 * Display the url of the author of the current comment.
171 * @uses apply_filters()
172 * @uses get_comment_author_url() Retrieves the comment author's URL
174 function comment_author_url() {
175 echo apply_filters('comment_url', get_comment_author_url());
179 * Retrieves the HTML link of the url of the author of the current comment.
181 * $linktext parameter is only used if the URL does not exist for the comment
182 * author. If the URL does exist then the URL will be used and the $linktext
185 * Encapsulate the HTML link between the $before and $after. So it will appear
186 * in the order of $before, link, and finally $after.
189 * @uses apply_filters() Calls the 'get_comment_author_url_link' on the complete HTML before returning.
191 * @param string $linktext The text to display instead of the comment author's email address
192 * @param string $before The text or HTML to display before the email link.
193 * @param string $after The text or HTML to display after the email link.
194 * @return string The HTML link between the $before and $after parameters
196 function get_comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
197 $url = get_comment_author_url();
198 $display = ($linktext != '') ? $linktext : $url;
199 $display = str_replace( 'http://www.', '', $display );
200 $display = str_replace( 'http://', '', $display );
201 if ( '/' == substr($display, -1) )
202 $display = substr($display, 0, -1);
203 $return = "$before<a href='$url' rel='external'>$display</a>$after";
204 return apply_filters('get_comment_author_url_link', $return);
208 * Displays the HTML link of the url of the author of the current comment.
211 * @see get_comment_author_url_link() Echos result
213 * @param string $linktext The text to display instead of the comment author's email address
214 * @param string $before The text or HTML to display before the email link.
215 * @param string $after The text or HTML to display after the email link.
217 function comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
218 echo get_comment_author_url_link( $linktext, $before, $after );
222 * Retrieve the comment date of the current comment.
225 * @uses apply_filters() Calls 'get_comment_date' hook with the formated date and the $d parameter respectively
228 * @param string $d The format of the date (defaults to user's config)
229 * @return string The comment's date
231 function get_comment_date( $d = '' ) {
234 $date = mysql2date( get_option('date_format'), $comment->comment_date);
236 $date = mysql2date($d, $comment->comment_date);
237 return apply_filters('get_comment_date', $date, $d);
241 * Display the comment date of the current comment.
245 * @param string $d The format of the date (defaults to user's config)
247 function comment_date( $d = '' ) {
248 echo get_comment_date( $d );
252 * Retrieve the excerpt of the current comment.
254 * Will cut each word and only output the first 20 words with '...' at the end.
255 * If the word count is less than 20, then no truncating is done and no '...'
260 * @uses apply_filters() Calls 'get_comment_excerpt' on truncated comment
262 * @return string The maybe truncated comment with 20 words or less
264 function get_comment_excerpt() {
266 $comment_text = strip_tags($comment->comment_content);
267 $blah = explode(' ', $comment_text);
268 if (count($blah) > 20) {
276 for ($i=0; $i<$k; $i++) {
277 $excerpt .= $blah[$i] . ' ';
279 $excerpt .= ($use_dotdotdot) ? '...' : '';
280 return apply_filters('get_comment_excerpt', $excerpt);
284 * Display the excerpt of the current comment.
287 * @uses apply_filters() Calls 'comment_excerpt' hook before displaying excerpt
289 function comment_excerpt() {
290 echo apply_filters('comment_excerpt', get_comment_excerpt() );
294 * Retrieve the comment id of the current comment.
298 * @uses apply_filters() Calls the 'get_comment_ID' hook for the comment ID
300 * @return int The comment ID
302 function get_comment_ID() {
304 return apply_filters('get_comment_ID', $comment->comment_ID);
308 * Displays the comment id of the current comment.
311 * @see get_comment_ID() Echos Result
313 function comment_ID() {
314 echo get_comment_ID();
318 * Retrieve the link to the current comment.
323 * @return string The permalink to the current comment
325 function get_comment_link() {
327 return get_permalink( $comment->comment_post_ID ) . '#comment-' . $comment->comment_ID;
331 * Retrieves the link to the current post comments.
335 * @return string The link to the comments
337 function get_comments_link() {
338 return get_permalink() . '#comments';
342 * Displays the link to the current post comments.
346 * @param string $deprecated Not Used
347 * @param bool $deprecated Not Used
349 function comments_link( $deprecated = '', $deprecated = '' ) {
350 echo get_comments_link();
354 * Retrieve the amount of comments a post has.
357 * @uses apply_filters() Calls the 'get_comments_number' hook on the number of comments
359 * @param int $post_id The Post ID
360 * @return int The number of comments a post has
362 function get_comments_number( $post_id = 0 ) {
364 $post_id = (int) $post_id;
367 $post_id = (int) $id;
369 $post = get_post($post_id);
370 if ( ! isset($post->comment_count) )
373 $count = $post->comment_count;
375 return apply_filters('get_comments_number', $count);
379 * Display the language string for the number of comments the current post has.
383 * @uses apply_filters() Calls the 'comments_number' hook on the output and number of comments respectively.
385 * @param string $zero Text for no comments
386 * @param string $one Text for one comment
387 * @param string $more Text for more than one comment
388 * @param string $deprecated Not used.
390 function comments_number( $zero = false, $one = false, $more = false, $deprecated = '' ) {
392 $number = get_comments_number($id);
395 $output = str_replace('%', number_format_i18n($number), ( false === $more ) ? __('% Comments') : $more);
396 elseif ( $number == 0 )
397 $output = ( false === $zero ) ? __('No Comments') : $zero;
399 $output = ( false === $one ) ? __('1 Comment') : $one;
401 echo apply_filters('comments_number', $output, $number);
405 * Retrieve the text of the current comment.
410 * @return string The comment content
412 function get_comment_text() {
414 return apply_filters('get_comment_text', $comment->comment_content);
418 * Displays the text of the current comment.
421 * @uses apply_filters() Passes the comment content through the 'comment_text' hook before display
422 * @uses get_comment_text() Gets the comment content
424 function comment_text() {
425 echo apply_filters('comment_text', get_comment_text() );
429 * Retrieve the comment time of the current comment.
433 * @uses apply_filter() Calls 'get_comment_time' hook with the formatted time, the $d parameter, and $gmt parameter passed.
435 * @param string $d Optional. The format of the time (defaults to user's config)
436 * @param bool $gmt Whether to use the GMT date
437 * @return string The formatted time
439 function get_comment_time( $d = '', $gmt = false ) {
441 $comment_date = $gmt? $comment->comment_date_gmt : $comment->comment_date;
443 $date = mysql2date(get_option('time_format'), $comment_date);
445 $date = mysql2date($d, $comment_date);
446 return apply_filters('get_comment_time', $date, $d, $gmt);
450 * Display the comment time of the current comment.
454 * @param string $d Optional. The format of the time (defaults to user's config)
456 function comment_time( $d = '' ) {
457 echo get_comment_time($d);
461 * Retrieve the comment type of the current comment.
465 * @uses apply_filters() Calls the 'get_comment_type' hook on the comment type
467 * @return string The comment type
469 function get_comment_type() {
472 if ( '' == $comment->comment_type )
473 $comment->comment_type = 'comment';
475 return apply_filters('get_comment_type', $comment->comment_type);
479 * Display the comment type of the current comment.
483 * @param string $commenttxt The string to display for comment type
484 * @param string $trackbacktxt The string to display for trackback type
485 * @param string $pingbacktxt The string to display for pingback type
487 function comment_type($commenttxt = 'Comment', $trackbacktxt = 'Trackback', $pingbacktxt = 'Pingback') {
488 $type = get_comment_type();
502 * Retrieve The current post's trackback URL.
504 * There is a check to see if permalink's have been enabled and if so, will
505 * retrieve the pretty path. If permalinks weren't enabled, the ID of the
506 * current post is used and appended to the correct page to go to.
509 * @uses apply_filters() Calls 'trackback_url' on the resulting trackback URL
512 * @return string The trackback URL after being filtered
514 function get_trackback_url() {
516 if ( '' != get_option('permalink_structure') ) {
517 $tb_url = trailingslashit(get_permalink()) . user_trailingslashit('trackback', 'single_trackback');
519 $tb_url = get_option('siteurl') . '/wp-trackback.php?p=' . $id;
521 return apply_filters('trackback_url', $tb_url);
525 * Displays the current post's trackback URL.
528 * @uses get_trackback_url() Gets the trackback url for the current post
530 * @param bool $deprecated Remove backwards compat in 2.5
531 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url() for the result instead.
533 function trackback_url($deprecated = true) {
534 if ($deprecated) echo get_trackback_url();
535 else return get_trackback_url();
539 * Generates and displays the RDF for the trackback information of current post.
543 * @param int $deprecated Not used (Was $timezone = 0)
545 function trackback_rdf($deprecated = '') {
546 if (stripos($_SERVER['HTTP_USER_AGENT'], 'W3C_Validator') === false) {
547 echo '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
548 xmlns:dc="http://purl.org/dc/elements/1.1/"
549 xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">
550 <rdf:Description rdf:about="';
553 echo ' dc:identifier="';
556 echo ' dc:title="'.str_replace('--', '--', wptexturize(strip_tags(get_the_title()))).'"'."\n";
557 echo ' trackback:ping="'.get_trackback_url().'"'." />\n";
563 * Whether the current post is open for comments.
568 * @param int $post_id An optional post ID to check instead of the current post.
569 * @return bool True if the comments are open
571 function comments_open( $post_id=NULL ) {
573 $_post = get_post($post_id);
575 $open = ( 'open' == $_post->comment_status );
576 return apply_filters( 'comments_open', $open, $post_id );
580 * Whether the current post is open for pings.
585 * @param int $post_id An optional post ID to check instead of the current post.
586 * @return bool True if pings are accepted
588 function pings_open( $post_id = NULL ) {
590 $_post = get_post($post_id);
592 $open = ( 'open' == $_post->ping_status );
593 return apply_filters( 'pings_open', $open, $post_id );
597 * Displays form token for unfiltered comments.
599 * Will only display nonce token if the current user has permissions for
600 * unfiltered html. Won't display the token for other users.
602 * The function was backported to 2.0.10 and was added to versions 2.1.3 and
603 * above. Does not exist in versions prior to 2.0.10 in the 2.0 branch and in
604 * the 2.1 branch, prior to 2.1.3. Technically added in 2.2.0.
606 * @since 2.0.10 Backported to 2.0 branch
608 * @uses $post Gets the ID of the current post for the token
610 function wp_comment_form_unfiltered_html_nonce() {
612 if ( current_user_can('unfiltered_html') )
613 wp_nonce_field('unfiltered-html-comment_' . $post->ID, '_wp_unfiltered_html_comment', false);
617 * Loads the comment template specified in $file.
619 * Will not display the comments template if not on single post or page, or if
620 * the post does not have comments.
622 * Uses the WordPress database object to query for the comments. The comments
623 * are passed through the 'comments_array' filter hook with the list of comments
624 * and the post ID respectively.
626 * The $file path is passed through a filter hook called, 'comments_template'
627 * which includes the TEMPLATEPATH and $file combined. Tries the $filtered path
628 * first and if it fails it will require the default comment themplate from the
629 * default theme. If either does not exist, then the WordPress process will be
630 * halted. It is advised for that reason, that the default theme is not deleted.
633 * @global array $comment List of comment objects for the current post
637 * @uses $withcomments Will not try to get the comments if the post has none.
639 * @param string $file Optional, default '/comments.php'. The file to load
640 * @return null Returns null if no comments appear
642 function comments_template( $file = '/comments.php' ) {
643 global $wp_query, $withcomments, $post, $wpdb, $id, $comment, $user_login, $user_ID, $user_identity;
645 if ( ! (is_single() || is_page() || $withcomments) )
648 $req = get_option('require_name_email');
649 $commenter = wp_get_current_commenter();
650 extract($commenter, EXTR_SKIP);
652 /** @todo Use API instead of SELECTs. */
654 $comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND (comment_approved = '1' OR ( user_id = %d AND comment_approved = '0' ) ) ORDER BY comment_date", $post->ID, $user_ID));
655 } else if ( empty($comment_author) ) {
656 $comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1' ORDER BY comment_date", $post->ID));
658 $comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND ( comment_approved = '1' OR ( comment_author = %s AND comment_author_email = %s AND comment_approved = '0' ) ) ORDER BY comment_date", $post->ID, $comment_author, $comment_author_email));
661 // keep $comments for legacy's sake (remember $table*? ;) )
662 $comments = $wp_query->comments = apply_filters( 'comments_array', $comments, $post->ID );
663 $wp_query->comment_count = count($wp_query->comments);
664 update_comment_cache($comments);
666 define('COMMENTS_TEMPLATE', true);
667 $include = apply_filters('comments_template', TEMPLATEPATH . $file );
668 if ( file_exists( $include ) )
671 require( WP_CONTENT_DIR . '/themes/default/comments.php');
675 * Displays the JS popup script to show a comment.
677 * If the $file parameter is empty, then the home page is assumed. The defaults
678 * for the window are 400px by 400px.
680 * For the comment link popup to work, this function has to be called or the
681 * normal comment link will be assumed.
684 * @global string $wpcommentspopupfile The URL to use for the popup window
685 * @global int $wpcommentsjavascript Whether to use JavaScript or not. Set when function is called
687 * @param int $width Optional. The width of the popup window
688 * @param int $height Optional. The height of the popup window
689 * @param string $file Optional. Sets the location of the popup window
691 function comments_popup_script($width=400, $height=400, $file='') {
692 global $wpcommentspopupfile, $wpcommentsjavascript;
695 $wpcommentspopupfile = ''; // Use the index.
697 $wpcommentspopupfile = $file;
700 $wpcommentsjavascript = 1;
701 $javascript = "<script type='text/javascript'>\nfunction wpopen (macagna) {\n window.open(macagna, '_blank', 'width=$width,height=$height,scrollbars=yes,status=yes');\n}\n</script>\n";
706 * Displays the link to the comments popup window for the current post ID.
708 * Is not meant to be displayed on single posts and pages. Should be used on the
713 * @uses $wpcommentspopupfile
714 * @uses $wpcommentsjavascript
717 * @param string $zero The string to display when no comments
718 * @param string $one The string to display when only one comment is available
719 * @param string $more The string to display when there are more than one comment
720 * @param string $css_class The CSS class to use for comments
721 * @param string $none The string to display when comments have been turned off
722 * @return null Returns null on single posts and pages.
724 function comments_popup_link( $zero = 'No Comments', $one = '1 Comment', $more = '% Comments', $css_class = '', $none = 'Comments Off' ) {
725 global $id, $wpcommentspopupfile, $wpcommentsjavascript, $post;
727 if ( is_single() || is_page() )
730 $number = get_comments_number( $id );
732 if ( 0 == $number && 'closed' == $post->comment_status && 'closed' == $post->ping_status ) {
733 echo '<span' . ((!empty($css_class)) ? ' class="' . $css_class . '"' : '') . '>' . $none . '</span>';
737 if ( !empty($post->post_password) ) { // if there's a password
738 if ( !isset($_COOKIE['wp-postpass_' . COOKIEHASH]) || $_COOKIE['wp-postpass_' . COOKIEHASH] != $post->post_password ) { // and it doesn't match the cookie
739 echo __('Enter your password to view comments');
745 if ( $wpcommentsjavascript ) {
746 if ( empty( $wpcommentspopupfile ) )
747 $home = get_option('home');
749 $home = get_option('siteurl');
750 echo $home . '/' . $wpcommentspopupfile . '?comments_popup=' . $id;
751 echo '" onclick="wpopen(this.href); return false"';
752 } else { // if comments_popup_script() is not in the template, display simple comment link
754 echo get_permalink() . '#respond';
760 if ( !empty( $css_class ) ) {
761 echo ' class="'.$css_class.'" ';
763 $title = attribute_escape( get_the_title() );
765 echo apply_filters( 'comments_popup_link_attributes', '' );
767 echo ' title="' . sprintf( __('Comment on %s'), $title ) . '">';
768 comments_number( $zero, $one, $more, $number );