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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 |
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496 | $dupe .= "OR comment_author_email = '$comment_author_email' "; |
497 | $dupe .= ") AND comment_content = '$comment_content' LIMIT 1"; |
498 | if ( $wpdb->get_var($dupe) ) { |
499 | if ( defined('DOING_AJAX') ) |
500 | die( __('Duplicate comment detected; it looks as though you’ve already said that!') ); |
501 |
|
502 | wp_die( __('Duplicate comment detected; it looks as though you’ve already said that!') ); |
503 | } |
504 |
|
505 | do_action( 'check_comment_flood', $comment_author_IP, $comment_author_email, $comment_date_gmt ); |
506 |
|
507 | if ( isset($user_id) && $user_id) { |
508 | $userdata = get_userdata($user_id); |
509 | $user = new WP_User($user_id); |
510 | $post_author = $wpdb->get_var($wpdb->prepare("SELECT post_author FROM $wpdb->posts WHERE ID = %d LIMIT 1", $comment_post_ID)); |
511 | } |
512 |
|
513 | if ( isset($userdata) && ( $user_id == $post_author || $user->has_cap('moderate_comments') ) ) { |
514 | // The author and the admins get respect. |