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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 |
---|---|
350 | // Simple duplicate check |
351 | // expected_slashed ($comment_post_ID, $comment_author, $comment_author_email, $comment_content) |
352 | $dupe = "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = '$comment_post_ID' AND ( comment_author = '$comment_author' "; |
353 | if ( $comment_author_email ) |
354 | $dupe .= "OR comment_author_email = '$comment_author_email' "; |
355 | $dupe .= ") AND comment_content = '$comment_content' LIMIT 1"; |
356 | if ( $wpdb->get_var($dupe) ) |
357 | wp_die( __('Duplicate comment detected; it looks as though you\'ve already said that!') ); |
358 |
|
359 | do_action( 'check_comment_flood', $comment_author_IP, $comment_author_email, $comment_date_gmt ); |
360 |
|
361 | if ( $user_id ) { |
362 | $userdata = get_userdata($user_id); |
363 | $user = new WP_User($user_id); |
364 | $post_author = $wpdb->get_var($wpdb->prepare("SELECT post_author FROM $wpdb->posts WHERE ID = %d LIMIT 1", $comment_post_ID)); |
365 | } |
366 |
|
367 | if ( $userdata && ( $user_id == $post_author || $user->has_cap('moderate_comments') ) ) { |
368 | // The author and the admins get respect. |