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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 |
|---|---|
| 122 | $dupe .= ") AND comment_content = '$comment_content' LIMIT 1"; |
| 123 | if ( $wpdb->get_var($dupe) ) |
| 124 | die( __('Duplicate comment detected; it looks as though you\'ve already said that!') ); |
| 125 | |
| 126 | // Simple flood-protection |
| 127 | if ( $lasttime = $wpdb->get_var("SELECT comment_date_gmt FROM $wpdb->comments WHERE comment_author_IP = '$comment_author_IP' OR comment_author_email = '$comment_author_email' ORDER BY comment_date DESC LIMIT 1") ) { |
| 128 | $time_lastcomment = mysql2date('U', $lasttime); |
| 129 | $time_newcomment = mysql2date('U', $comment_date_gmt); |
| 130 | if ( ($time_newcomment - $time_lastcomment) < 15 ) { |
| 131 | do_action('comment_flood_trigger', $time_lastcomment, $time_newcomment); |
| 132 | die( __('Sorry, you can only post a new comment once every 15 seconds. Slow down cowboy.') ); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | if ( $user_id ) { |
| 137 | $userdata = get_userdata($user_id); |
| 138 | $user = new WP_User($user_id); |
| 139 | $post_author = $wpdb->get_var("SELECT post_author FROM $wpdb->posts WHERE ID = '$comment_post_ID' LIMIT 1"); |
| 140 | } |