public static function low($string): string
    {
        if (self::isMBString()) {
            return mb_strtolower($string, self::$encoding);
        }

        return strtolower($string); // @codeCoverageIgnore
    }
public static function low($string): string
    {
        if (self::isMBString()) {
            return mb_strtolower($string, self::$encoding);
        }

        return strtolower($string); // @codeCoverageIgnore
    }
public static function low ( $ string ) : string { if ( self :: isMBString ( ) ) { return mb_strtolower ( $ string , self :: $ encoding ) ; } return strtolower ( $ string ) ; // @codeCoverageIgnore }
Make a string lowercase

@param string $string
@return string
Make a string lowercase