Callback for validating the external_header_video value.

Ensures that the provided URL is supported.

$validity WP_Error Required

$value mixed Required

mixed

File: wp-includes/class-wp-customize-manager.php. View all references

public function _validate_external_header_video( $validity, $value ) {
	$video = sanitize_url( $value );
	if ( $video ) {
		if ( ! preg_match( '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#', $video ) ) {
			$validity->add( 'invalid_url', __( 'Please enter a valid YouTube URL.' ) );
		}
	}
	return $validity;
}