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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 |
|---|---|
| 486 | $dupe .= ") AND comment_content = '$comment' LIMIT 1"; |
| 487 | if ( $wpdb->get_var($dupe) ) |
| 488 | die( __('Duplicate comment detected; it looks as though you\'ve already said that!') ); |
| 489 | |
| 490 | // Simple flood-protection |
| 491 | if ( $lasttime = $wpdb->get_var("SELECT comment_date_gmt FROM $wpdb->comments WHERE comment_author_IP = '$user_ip' OR comment_author_email = '$email' ORDER BY comment_date DESC LIMIT 1") ) { |
| 492 | $time_lastcomment = mysql2date('U', $lasttime); |
| 493 | $time_newcomment = mysql2date('U', $now_gmt); |
| 494 | if ( ($time_newcomment - $time_lastcomment) < 15 ) { |
| 495 | do_action('comment_flood_trigger', $time_lastcomment, $time_newcomment); |
| 496 | die( __('Sorry, you can only post a new comment once every 15 seconds. Slow down cowboy.') ); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | if ( $userdata && ( $user_id == $post_author || $userdata->user_level >= 9 ) ) { |
| 501 | $approved = 1; |
| 502 | } else { |
| 503 | if ( check_comment($author, $email, $url, $comment, $user_ip, $user_agent, $comment_type) ) |
| 504 | $approved = 1; |