ntwb / wordpress

 * @param  string           $param

 * @return mixed

 */

function rest_parse_request_arg( $value, $request, $param ) {

	$is_valid = rest_validate_request_arg( $value, $request, $param );

	if ( is_wp_error( $is_valid ) ) {

		return $is_valid;

	}

	$value = rest_sanitize_request_arg( $value, $request, $param );

	return $value;

}

/**

 * Determines if an IP address is valid.

	 * @return WP_Error|string The sanitized email address, if valid,

	 *                         otherwise an error.

	 */

	public function check_comment_author_email( $value, $request, $param ) {

		$email = (string) $value;

		if ( empty( $email ) ) {

			return $email;

		}

		$check_email = rest_validate_request_arg( $email, $request, $param );

		if ( is_wp_error( $check_email ) ) {

			return $check_email;

		}

		return $email;

	}

}