在PHP中验证传入的SOAP请求到WSDL

$client = new SoapClient($wsdl_url, array('soap_version' => SOAP_1_2, 'trace' => true));

$wsdl_url = "https://example.com/service/wsdl";
$wsdl = new SimpleXMLElement($wsdl_url);
$xsd = $wsdl->getSchema();
$wsdl = $wsdl->getDefinitions()->__toDOM();

$request = array(
    "soap" => array(
        "header" => array(
            array(
                "namespace" => "http://schemas.xmlsoap.org/soap/envelope/",
                "name" => "soapenv",
                "encodingStyle" => "http://schemas.xmlsoap.org/soap/encoding/"
            )
        ),
        "body" => array(
            array(
                "namespace" => array("soapenv", "http://schemas.xmlsoap.org/soap/envelope/"),
                "name" => "Body",
                "parts" => 
                array(  // SOAP body 的各个操作步骤
                    array(
                        "name" => "request",
                        "style" => "rpc",
                        "targetNamespace" => "urn:SomeNs",
                        "part" => array(
                            array(