PHP는 wsdl을 어떻게 처리합니까?

<?php
$client = new SoapClient(&#39;http://api.test.cn/xwebservices/testServer?wsdl&#39;);
print "\n提供的方法\n";
print_r($client->__getFunctions());
print "相关的数据结构\n";
print_r($client->__getTypes());
print "\n\n";

<?php
/**
 * @author 0x584A
 * 获取WSDL接口数据
 */
class getwsdlTest extends PHPUnit_Framework_TestCase
{
    public $apiurl = &#39;http://api.test.cn/xwebservices/testServer?wsdl&#39;;
    private static $soapClientHandler;
    private $infoArr = [
        &#39;err_msg&#39; => &#39;false&#39;,
        &#39;err_code&#39; => &#39;0&#39;,
        &#39;date&#39; => &#39;此处是要传输的数据&#39;
    ];
    public function setUp()
    {
        $client = new SoapClient(&#39;http://api.test.cn/xwebservices/testServer?wsdl&#39;);
        print "提供的方法\n";
        print_r($client->__getFunctions());
        print "相关的数据结构\n";
        print_r($client->__getTypes());
        print "\n\n";
    }
    /**
     * xxxxUserInfo方法
     */
    public function testxxxxUserInfoData()
    {
        try {
            $ApiInfo = $this->infoArr;
            //set request param
            $parameter = array(
                &#39;in0&#39; => $ApiInfo[&#39;err_msg&#39;],
                &#39;in1&#39; => $ApiInfo[&#39;err_code&#39;],
                &#39;in2&#39; => $ApiInfo[&#39;date&#39;]
            );
            $result = $this->getSoapClientHandler()->synchUserInfo($parameter);
            //调用结果返回异常
            if (!$result instanceof stdClass) {
                throw new Exception("调用synchUserInfo结果出现异常:" . json_encode($result));
            }
            //调用接口状态码，输出对应错误详情
            if ($result->out == &#39;01&#39;) {
                throw new Exception("调用synchUserInfo=>error:" . $result->out . ",msg:接口数据异常");
            }
            $xml_parser = xml_parser_create();
            if (!xml_parse($xml_parser, $result->out, true)) {
                xml_parser_free($xml_parser);
                throw new Exception("调用synchUserInfo返回的不是一个xml结构体");
            }
            xml_parser_free($xml_parser);
            //XXE
            libxml_disable_entity_loader(true);
            $xml = simplexml_load_string($result->out, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);
            // 输出参数
            var_dump($xml->data);
            echo " 成功".PHP_EOL;
        } catch (SoapFault $soapFault) {
            throw new Exception($soapFault->getMessage() . $this->getSoapClientHandler()->__getLastResponse());
        }
    }
    /**
     * @description getSoapClientHandler
     */
    public function getSoapClientHandler()
    {
        if (!self::$soapClientHandler) {
            self::$soapClientHandler = new SoapClient($this->getSynchApi());
        }
        return self::$soapClientHandler;
    }
    /**
     * @description getSynchApi
     */
    public function getSynchApi()
    {
        return $this->apiurl;
    }
}
?>