如何使用soapserver和soapvar返回xml响应

Question

我实现了一个生成xml响应的soapserver。

首先我有这个php文件：

<?php

class Testwebservice {
    public $name;
    public $value;  
}


function getWebservice($input1, $input2) {

 $testwebservices = array();

 $testwebservices[0] = new Testwebservice();
 $testwebservices[0]->name = $input1->name;
 $testwebservices[0]->value = $input1->value;

 $testwebservices[1] = new Testwebservice();
 $testwebservices[1]->name = $input2->name;
 $testwebservices[1]->value = $input2->value;

  /**
   * Use an ArrayObject instead of a plain array.
   */
  $return_array = new ArrayObject();

  foreach ($testwebservices as $l) {

    // Build a basic return object.
    $webservice = new Testwebservice();
    $webservice->name = $l->name;
    $webservice->value = $l->value;

    /**
     * Encode each array element with SoapVar.  Parameter 5 is the name of the
     * XML element you want to use.  This only seems to work within
     * an ArrayObject.
     */
    $webservice = new SoapVar($webservice, SOAP_ENC_OBJECT, null, null, 'return');

    $return_array->append($webservice);
  }
  print_r($return_array);
  return $return_array;
}

$url = 'testphp.local/webservice.php';
$service = new SoapServer(null, ['uri' => $url]);

$service->addFunction('getWebservice');
$service->handle();

此文件返回一个数组对象：

stdClass Object
(
    [return] => Array
        (
            [0] => stdClass Object
                (
                    [name] => input1
                    [value] => 100
                )

            [1] => stdClass Object
                (
                    [name] => input2
                    [value] => 200
                )
        )
)

当我在xml中转换这个对象时，我得到了这个回复：

<?xml version='1.0' encoding='UTF-8'?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body>
<ns1:RequestResponse>
    <ns1:return>
        <ns1:return>
            <ns1:name>input</ns1:name>
            <ns1:value>100</ns1:value>
        </ns1:return>
        <ns1:return>
            <ns1:name>input2</ns1:name>
            <ns1:value>200</ns1:value>
        </ns1:return>
    </ns1:return>
</ns1:RequestResponse>
</soapenv:Body>
</soapenv:Envelope>

我的问题是我想删除第一个标记返回，所以我可以得到像这样的xml响应：

    <?xml version='1.0' encoding='UTF-8'?>
    <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    <soapenv:Body>
    <ns1:RequestResponse>
            <ns1:return>
                <ns1:name>input</ns1:name>
                <ns1:value>100</ns1:value>
            </ns1:return>
            <ns1:return>
                <ns1:name>input2</ns1:name>
                <ns1:value>200</ns1:value>
            </ns1:return>
    </ns1:RequestResponse>
    </soapenv:Body>
    </soapenv:Envelope>