WordPress at a glance
filter is not described

wp_is_comment_flood filter-hook . WP 4.7.0

Filters whether a comment is part of a comment flood.

The default check is wp_check_comment_flood(). See check_comment_flood_db().


add_filter( 'wp_is_comment_flood', 'filter_function_name_4021', 10, 5 );
function filter_function_name_4021( $is_flood, $comment_author_IP, $comment_author_email, $comment_date_gmt, $avoid_die ){
	// filter...

	return $is_flood;
Is a comment flooding occurring? Default false.
Comment author's IP address.
Comment author's email.
GMT date the comment was posted.
Whether to prevent executing wp_die() or die() if a comment flood is occurring.

Where the hook is called

wp-includes/comment.php 737-744
$is_flood = apply_filters(

Where the hook is used (in WP core)

wp-includes/comment.php 816
add_filter( 'wp_is_comment_flood', 'wp_check_comment_flood', 10, 5 );