comment_exists() │ WP 2.0.0

Determines if a comment exists based on author and date.

For best performance, use $timezone = 'gmt', which queries a field that is properly indexed. The default value for $timezone is 'blog' for legacy reasons.

No Hooks.

Returns

String|null. Comment post ID on success.

Usage

comment_exists( $comment_author, $comment_date, $timezone );

$comment_author(string) (required)

Author of the comment.

$comment_date(string) (required)

Date of the comment.

$timezone(string)

Timezone. Accepts 'blog' or 'gmt'.
Default: 'blog'

Notes

• Global. wpdb. $wpdb WordPress database abstraction object.

Changelog

comment_exists() comment exists code ^{WP 7.0}

function comment_exists( $comment_author, $comment_date, $timezone = 'blog' ) {
	global $wpdb;

	$date_field = 'comment_date';
	if ( 'gmt' === $timezone ) {
		$date_field = 'comment_date_gmt';
	}

	return $wpdb->get_var(
		$wpdb->prepare(
			"SELECT comment_post_ID FROM $wpdb->comments
			WHERE comment_author = %s AND $date_field = %s",
			stripslashes( $comment_author ),
			stripslashes( $comment_date )
		)
	);
}