3 * Comment template functions
5 * These functions are meant to live inside of the WordPress loop.
12 * get_comment_author() - Retrieve the author of the current comment
14 * If the comment has an empty comment_author field, then 'Anonymous' person
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 * comment_author() - 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 * get_comment_author_email() - 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 * comment_author_email() - 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 harvesters
60 * do not capture your commentors' email address. Most assume that their email address will
61 * not appear in raw form on the blog. Doing so will enable anyone, including those that
62 * people don't want to get the email address and use it for their own means good and bad.
65 * @uses apply_filters() Calls 'author_email' hook on the author email
67 function comment_author_email() {
68 echo apply_filters('author_email', get_comment_author_email() );
72 * comment_author_email_link() - Display the html email link to the author of the current comment
74 * Care should be taken to protect the email address and assure that email harvesters
75 * do not capture your commentors' email address. Most assume that their email address will
76 * not appear in raw form on the blog. Doing so will enable anyone, including those that
77 * people don't want to get the email address and use it for their own means good and bad.
80 * @uses apply_filters() Calls 'comment_email' hook for the display of the comment author's email
81 * @global object $comment The current Comment row object
83 * @param string $linktext The text to display instead of the comment author's email address
84 * @param string $before The text or HTML to display before the email link.
85 * @param string $after The text or HTML to display after the email link.
87 function comment_author_email_link($linktext='', $before='', $after='') {
89 $email = apply_filters('comment_email', $comment->comment_author_email);
90 if ((!empty($email)) && ($email != '@')) {
91 $display = ($linktext != '') ? $linktext : $email;
93 echo "<a href='mailto:$email'>$display</a>";
99 * get_comment_author_link() - Retrieve the html link to the url of the author of the current comment
102 * @uses apply_filters() Calls 'get_comment_author_link' hook on the complete link HTML or author
104 * @return string Comment Author name or HTML link for author's URL
106 function get_comment_author_link() {
107 /** @todo Only call these functions when they are needed. Include in if... else blocks */
108 $url = get_comment_author_url();
109 $author = get_comment_author();
111 if ( empty( $url ) || 'http://' == $url )
114 $return = "<a href='$url' rel='external nofollow'>$author</a>";
115 return apply_filters('get_comment_author_link', $return);
119 * comment_author_link() - Display the html link to the url of the author of the current comment
122 * @see get_comment_author_link() Echos result
124 function comment_author_link() {
125 echo get_comment_author_link();
129 * get_comment_author_IP() - Retrieve the IP address of the author of the current comment
133 * @uses apply_filters()
137 function get_comment_author_IP() {
139 return apply_filters('get_comment_author_IP', $comment->comment_author_IP);
143 * comment_author_IP() - Displays the IP address of the author of the current comment
146 * @see get_comment_author_IP() Echos Result
148 function comment_author_IP() {
149 echo get_comment_author_IP();
153 * get_comment_author_url() - Returns the url of the author of the current comment
156 * @uses apply_filters() Calls 'get_comment_author_url' hook on the comment author's URL
160 function get_comment_author_url() {
162 return apply_filters('get_comment_author_url', $comment->comment_author_url);
166 * comment_author_url() - Display the url of the author of the current comment
169 * @uses apply_filters()
170 * @uses get_comment_author_url() Retrieves the comment author's URL
172 function comment_author_url() {
173 echo apply_filters('comment_url', get_comment_author_url());
177 * get_comment_author_url_link() - Retrieves the HTML link of the url of the author of the current comment
179 * $linktext parameter is only used if the URL does not exist for the comment author. If the URL does
180 * exist then the URL will be used and the $linktext will be ignored.
182 * Encapsulate the HTML link between the $before and $after. So it will appear in the order of $before,
183 * link, and finally $after.
186 * @uses apply_filters() Calls the 'get_comment_author_url_link' on the complete HTML before returning.
188 * @param string $linktext The text to display instead of the comment author's email address
189 * @param string $before The text or HTML to display before the email link.
190 * @param string $after The text or HTML to display after the email link.
191 * @return string The HTML link between the $before and $after parameters
193 function get_comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
194 $url = get_comment_author_url();
195 $display = ($linktext != '') ? $linktext : $url;
196 $display = str_replace( 'http://www.', '', $display );
197 $display = str_replace( 'http://', '', $display );
198 if ( '/' == substr($display, -1) )
199 $display = substr($display, 0, -1);
200 $return = "$before<a href='$url' rel='external'>$display</a>$after";
201 return apply_filters('get_comment_author_url_link', $return);
205 * comment_author_url_link() - Displays the HTML link of the url of the author of the current comment
208 * @see get_comment_author_url_link() Echos result
210 * @param string $linktext The text to display instead of the comment author's email address
211 * @param string $before The text or HTML to display before the email link.
212 * @param string $after The text or HTML to display after the email link.
214 function comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
215 echo get_comment_author_url_link( $linktext, $before, $after );
219 * get_comment_date() - Retrieve the comment date of the current comment
222 * @uses apply_filters() Calls 'get_comment_date' hook with the formated date and the $d parameter respectively
225 * @param string $d The format of the date (defaults to user's config)
226 * @return string The comment's date
228 function get_comment_date( $d = '' ) {
231 $date = mysql2date( get_option('date_format'), $comment->comment_date);
233 $date = mysql2date($d, $comment->comment_date);
234 return apply_filters('get_comment_date', $date, $d);
238 * comment_date() - Display the comment date of the current comment
242 * @param string $d The format of the date (defaults to user's config)
244 function comment_date( $d = '' ) {
245 echo get_comment_date( $d );
249 * get_comment_excerpt() - Retrieve the excerpt of the current comment
251 * Will cut each word and only output the first 20 words with '...' at the end.
252 * If the word count is less than 20, then no truncating is done and no '...'
257 * @uses apply_filters() Calls 'get_comment_excerpt' on truncated comment
259 * @return string The maybe truncated comment with 20 words or less
261 function get_comment_excerpt() {
263 $comment_text = strip_tags($comment->comment_content);
264 $blah = explode(' ', $comment_text);
265 if (count($blah) > 20) {
273 for ($i=0; $i<$k; $i++) {
274 $excerpt .= $blah[$i] . ' ';
276 $excerpt .= ($use_dotdotdot) ? '...' : '';
277 return apply_filters('get_comment_excerpt', $excerpt);
281 * comment_excerpt() - Returns the excerpt of the current comment
284 * @uses apply_filters() Calls 'comment_excerpt' hook before displaying excerpt
286 function comment_excerpt() {
287 echo apply_filters('comment_excerpt', get_comment_excerpt() );
291 * get_comment_ID() - Retrieve the comment id of the current comment
295 * @uses apply_filters() Calls the 'get_comment_ID' hook for the comment ID
297 * @return int The comment ID
299 function get_comment_ID() {
301 return apply_filters('get_comment_ID', $comment->comment_ID);
305 * comment_ID() - Displays the comment id of the current comment
308 * @see get_comment_ID() Echos Result
310 function comment_ID() {
311 echo get_comment_ID();
315 * get_comment_link() - Retrieve the link to the current comment
320 * @return string The permalink to the current comment
322 function get_comment_link() {
324 return get_permalink( $comment->comment_post_ID ) . '#comment-' . $comment->comment_ID;
328 * get_comments_link() - Retrieves the link to the current post comments
332 * @return string The link to the comments
334 function get_comments_link() {
335 return get_permalink() . '#comments';
339 * comments_link() - Displays the link to the current post comments
343 * @param string $deprecated Not Used
344 * @param bool $deprecated Not Used
346 function comments_link( $deprecated = '', $deprecated = '' ) {
347 echo get_comments_link();
351 * get_comments_number() - Retrieve the amount of comments a post has
354 * @uses apply_filters() Calls the 'get_comments_number' hook on the number of comments
356 * @param int $post_id The Post ID
357 * @return int The number of comments a post has
359 function get_comments_number( $post_id = 0 ) {
361 $post_id = (int) $post_id;
364 $post_id = (int) $id;
366 $post = get_post($post_id);
367 if ( ! isset($post->comment_count) )
370 $count = $post->comment_count;
372 return apply_filters('get_comments_number', $count);
376 * comments_number() - Display the language string for the number of comments the current post has
380 * @uses apply_filters() Calls the 'comments_number' hook on the output and number of comments respectively.
382 * @param string $zero Text for no comments
383 * @param string $one Text for one comment
384 * @param string $more Text for more than one comment
385 * @param string $deprecated Not used.
387 function comments_number( $zero = false, $one = false, $more = false, $deprecated = '' ) {
389 $number = get_comments_number($id);
392 $output = str_replace('%', $number, ( false === $more ) ? __('% Comments') : $more);
393 elseif ( $number == 0 )
394 $output = ( false === $zero ) ? __('No Comments') : $zero;
396 $output = ( false === $one ) ? __('1 Comment') : $one;
398 echo apply_filters('comments_number', $output, $number);
402 * get_comment_text() - Retrieve the text of the current comment
407 * @return string The comment content
409 function get_comment_text() {
411 return apply_filters('get_comment_text', $comment->comment_content);
415 * comment_text() - Displays the text of the current comment
418 * @uses apply_filters() Passes the comment content through the 'comment_text' hook before display
419 * @uses get_comment_text() Gets the comment content
421 function comment_text() {
422 echo apply_filters('comment_text', get_comment_text() );
426 * get_comment_time() - Retrieve the comment time of the current comment
430 * @uses apply_filter() Calls 'get_comment_time' hook with the formatted time, the $d parameter, and $gmt parameter passed.
432 * @param string $d Optional. The format of the time (defaults to user's config)
433 * @param bool $gmt Whether to use the GMT date
434 * @return string The formatted time
436 function get_comment_time( $d = '', $gmt = false ) {
438 $comment_date = $gmt? $comment->comment_date_gmt : $comment->comment_date;
440 $date = mysql2date(get_option('time_format'), $comment_date);
442 $date = mysql2date($d, $comment_date);
443 return apply_filters('get_comment_time', $date, $d, $gmt);
447 * comment_time() - Display the comment time of the current comment
451 * @param string $d Optional. The format of the time (defaults to user's config)
453 function comment_time( $d = '' ) {
454 echo get_comment_time($d);
458 * get_comment_type() - Retrieve the comment type of the current comment
462 * @uses apply_filters() Calls the 'get_comment_type' hook on the comment type
464 * @return string The comment type
466 function get_comment_type() {
469 if ( '' == $comment->comment_type )
470 $comment->comment_type = 'comment';
472 return apply_filters('get_comment_type', $comment->comment_type);
476 * comment_type() - Display the comment type of the current comment
480 * @param string $commenttxt The string to display for comment type
481 * @param string $trackbacktxt The string to display for trackback type
482 * @param string $pingbacktxt The string to display for pingback type
484 function comment_type($commenttxt = 'Comment', $trackbacktxt = 'Trackback', $pingbacktxt = 'Pingback') {
485 $type = get_comment_type();
499 * get_trackback_url() - Retrieve The current post's trackback URL
501 * There is a check to see if permalink's have been enabled and if so, will retrieve
502 * the pretty path. If permalinks weren't enabled, the ID of the current post is used
503 * and appended to the correct page to go to.
506 * @uses apply_filters() Calls 'trackback_url' on the resulting trackback URL
509 * @return string The trackback URL after being filtered
511 function get_trackback_url() {
513 if ( '' != get_option('permalink_structure') ) {
514 $tb_url = trailingslashit(get_permalink()) . user_trailingslashit('trackback', 'single_trackback');
516 $tb_url = get_option('siteurl') . '/wp-trackback.php?p=' . $id;
518 return apply_filters('trackback_url', $tb_url);
522 * trackback_url() - Displays the current post's trackback URL
525 * @uses get_trackback_url() Gets the trackback url for the current post
527 * @param bool $deprecated Remove backwards compat in 2.5
528 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url() for the result instead.
530 function trackback_url($deprecated = true) {
531 if ($deprecated) echo get_trackback_url();
532 else return get_trackback_url();
536 * trackback_rdf() - Generates and displays the RDF for the trackback information of current post
540 * @param int $deprecated Not used (Was $timezone = 0)
542 function trackback_rdf($deprecated = '') {
543 if (stripos($_SERVER['HTTP_USER_AGENT'], 'W3C_Validator') === false) {
544 echo '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
545 xmlns:dc="http://purl.org/dc/elements/1.1/"
546 xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">
547 <rdf:Description rdf:about="';
550 echo ' dc:identifier="';
553 echo ' dc:title="'.str_replace('--', '--', wptexturize(strip_tags(get_the_title()))).'"'."\n";
554 echo ' trackback:ping="'.get_trackback_url().'"'." />\n";
560 * comments_open() - Whether the current post is open for comments
565 * @param int $post_id An optional post ID to check instead of the current post.
566 * @return bool True if the comments are open
568 function comments_open( $post_id=NULL ) {
570 $_post = get_post($post_id);
572 $open = ( 'open' == $_post->comment_status );
573 return apply_filters( 'comments_open', $open, $post_id );
577 * pings_open() - Whether the current post is open for pings
582 * @param int $post_id An optional post ID to check instead of the current post.
583 * @return bool True if pings are accepted
585 function pings_open( $post_id = NULL ) {
587 $_post = get_post($post_id);
589 $open = ( 'open' == $_post->ping_status );
590 return apply_filters( 'pings_open', $open, $post_id );
594 * wp_comment_form_unfiltered_html_nonce() - Displays form token for unfiltered comments
596 * Will only display nonce token if the current user has permissions for unfiltered html.
597 * Won't display the token for other users.
599 * The function was backported to 2.0.10 and was added to versions 2.1.3 and above. Does not
600 * exist in versions prior to 2.0.10 in the 2.0 branch and in the 2.1 branch, prior to 2.1.3.
601 * Technically added in 2.2.0.
603 * @since 2.0.10 Backported to 2.0 branch
605 * @uses $post Gets the ID of the current post for the token
607 function wp_comment_form_unfiltered_html_nonce() {
609 if ( current_user_can('unfiltered_html') )
610 wp_nonce_field('unfiltered-html-comment_' . $post->ID, '_wp_unfiltered_html_comment', false);
614 * comments_template() - Loads the comment template specified in $file
616 * Will not display the comments template if not on single post or page, or
617 * if the post does not have comments.
619 * Uses the WordPress database object to query for the comments. The comments
620 * are passed through the 'comments_array' filter hook with the list of comments
621 * and the post ID respectively.
623 * The $file path is passed through a filter hook called, 'comments_template'
624 * which includes the TEMPLATEPATH and $file combined. Tries the $filtered path
625 * first and if it fails it will require the default comment themplate from the
626 * default theme. If either does not exist, then the WordPress process will be
627 * halted. It is advised for that reason, that the default theme is not deleted.
630 * @global array $comment List of comment objects for the current post
634 * @uses $withcomments Will not try to get the comments if the post has none.
636 * @param string $file Optional, default '/comments.php'. The file to load
637 * @return null Returns null if no comments appear
639 function comments_template( $file = '/comments.php' ) {
640 global $wp_query, $withcomments, $post, $wpdb, $id, $comment, $user_login, $user_ID, $user_identity;
642 if ( ! (is_single() || is_page() || $withcomments) )
645 $req = get_option('require_name_email');
646 $commenter = wp_get_current_commenter();
647 extract($commenter, EXTR_SKIP);
649 /** @todo Use API instead of SELECTs. */
651 $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, $user_ID));
652 } else if ( empty($comment_author) ) {
653 $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));
655 $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));
658 // keep $comments for legacy's sake (remember $table*? ;) )
659 $comments = $wp_query->comments = apply_filters( 'comments_array', $comments, $post->ID );
660 $wp_query->comment_count = count($wp_query->comments);
661 update_comment_cache($comments);
663 define('COMMENTS_TEMPLATE', true);
664 $include = apply_filters('comments_template', TEMPLATEPATH . $file );
665 if ( file_exists( $include ) )
668 require( ABSPATH . 'wp-content/themes/default/comments.php');
672 * comments_popup_script() - Displays the JS popup script to show a comment
674 * If the $file parameter is empty, then the home page is assumed. The defaults
675 * for the window are 400px by 400px.
677 * For the comment link popup to work, this function has to be called or the
678 * normal comment link will be assumed.
681 * @global string $wpcommentspopupfile The URL to use for the popup window
682 * @global int $wpcommentsjavascript Whether to use JavaScript or not. Set when function is called
684 * @param int $width Optional. The width of the popup window
685 * @param int $height Optional. The height of the popup window
686 * @param string $file Optional. Sets the location of the popup window
688 function comments_popup_script($width=400, $height=400, $file='') {
689 global $wpcommentspopupfile, $wpcommentsjavascript;
692 $wpcommentspopupfile = ''; // Use the index.
694 $wpcommentspopupfile = $file;
697 $wpcommentsjavascript = 1;
698 $javascript = "<script type='text/javascript'>\nfunction wpopen (macagna) {\n window.open(macagna, '_blank', 'width=$width,height=$height,scrollbars=yes,status=yes');\n}\n</script>\n";
703 * comments_popup_link() - Displays the link to the comments popup window for the current post ID.
705 * Is not meant to be displayed on single posts and pages. Should be used on the lists of posts
709 * @uses $wpcommentspopupfile
710 * @uses $wpcommentsjavascript
713 * @param string $zero The string to display when no comments
714 * @param string $one The string to display when only one comment is available
715 * @param string $more The string to display when there are more than one comment
716 * @param string $css_class The CSS class to use for comments
717 * @param string $none The string to display when comments have been turned off
718 * @return null Returns null on single posts and pages.
720 function comments_popup_link( $zero = 'No Comments', $one = '1 Comment', $more = '% Comments', $css_class = '', $none = 'Comments Off' ) {
721 global $id, $wpcommentspopupfile, $wpcommentsjavascript, $post;
723 if ( is_single() || is_page() )
726 $number = get_comments_number( $id );
728 if ( 0 == $number && 'closed' == $post->comment_status && 'closed' == $post->ping_status ) {
729 echo '<span' . ((!empty($css_class)) ? ' class="' . $css_class . '"' : '') . '>' . $none . '</span>';
733 if ( !empty($post->post_password) ) { // if there's a password
734 if ( !isset($_COOKIE['wp-postpass_' . COOKIEHASH]) || $_COOKIE['wp-postpass_' . COOKIEHASH] != $post->post_password ) { // and it doesn't match the cookie
735 echo __('Enter your password to view comments');
741 if ( $wpcommentsjavascript ) {
742 if ( empty( $wpcommentspopupfile ) )
743 $home = get_option('home');
745 $home = get_option('siteurl');
746 echo $home . '/' . $wpcommentspopupfile . '?comments_popup=' . $id;
747 echo '" onclick="wpopen(this.href); return false"';
748 } else { // if comments_popup_script() is not in the template, display simple comment link
750 echo get_permalink() . '#respond';
756 if ( !empty( $css_class ) ) {
757 echo ' class="'.$css_class.'" ';
759 $title = attribute_escape( get_the_title() );
761 echo apply_filters( 'comments_popup_link_attributes', '' );
763 echo ' title="' . sprintf( __('Comment on %s'), $title ) . '">';
764 comments_number( $zero, $one, $more, $number );