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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 883 | if ( $user_ID) { |
| 884 | $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_gmt", $post->ID, $user_ID)); |
| 885 | } else if ( empty($comment_author) ) { |
| 886 | $comments = get_comments( array('post_id' => $post->ID, 'status' => 'approve', 'order' => 'ASC') ); |
| 887 | } else { |
| 888 | $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_gmt", $post->ID, wp_specialchars_decode($comment_author,ENT_QUOTES), $comment_author_email)); |
| 889 | } |
| 890 | |
| 891 | // keep $comments for legacy's sake |
| 892 | $wp_query->comments = apply_filters( 'comments_array', $comments, $post->ID ); |
| 893 | $comments = &$wp_query->comments; |
| 894 | $wp_query->comment_count = count($wp_query->comments); |
| 895 | update_comment_cache($wp_query->comments); |
| 896 | |
| 897 | if ( $separate_comments ) { |
| 898 | $wp_query->comments_by_type = &separate_comments($comments); |
| 899 | $comments_by_type = &$wp_query->comments_by_type; |
| 900 | } |
| 901 | |