private function setRealBoolean(string $val):bool
    {
        if ($val === "true") {
            $val = true;
        } else {
            $val = false;
        }
        return ($val);
    }
private function setRealBoolean(string $val):bool
    {
        if ($val === "true") {
            $val = true;
        } else {
            $val = false;
        }
        return ($val);
    }
private function setRealBoolean ( string $ val ) : bool { if ( $ val === "true" ) { $ val = true ; } else { $ val = false ; } return ( $ val ) ; }
Set real boolean type
@param string $val String value
@return bool Conversion value
Set real boolean type