public static function get_file_data_from_string( $string, $headers ) {
		foreach ( $headers as $field => $regex ) {
			if ( preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $string, $match ) && $match[1] ) {
				$headers[ $field ] = static::_cleanup_header_comment( $match[1] );
			} else {
				$headers[ $field ] = '';
			}
		}

		return $headers;
	}