--TEST-- Bug #34643 (wsdl default value) --EXTENSIONS-- soap --INI-- soap.wsdl_cache_enabled=0 --FILE-- server = new SoapServer($wsdl, $options); $this->server->setClass('fp'); } function __doRequest($request, $location, $action, $version, $one_way = 0): string { ob_start(); $this->server->handle($request); $response = ob_get_contents(); ob_end_clean(); return $response; } } $cl = new LocalSoapClient(__DIR__.'/bug34643.wsdl', array("trace"=>1)); print_r($cl->__getFunctions()); echo $cl->get_it("aaa")."\n"; echo $cl->get_it()."\n"; var_dump($cl->get_it(null)); ?> --EXPECT-- Array ( [0] => string get_it(string $opt) ) aaa zzz NULL