数组赋值的有关问题

数组赋值的问题

<br>public function setParm($parameter, $value) {<br>
$this->parameter[$parameter] = $value;<br>
return $this;<br>
}<br><br>function geturl($type){<br>     $this->setproductparm($type);<br>     return $this->getData();<br>     }  <br>   <br>private function setproductparm($urltype){<br>     $this->parameter=array();<br>     $this->type="";<br>     $this->setParm("Marketplace",self::marketplaceId);<br>     $this->version="2009-01-01";<br>     switch ($urltype){<br>        case "RequestReport":    <br>            $this->setParm("Action","RequestReport");<br>            $this->setParm("ReportType","_GET_MERCHANT_LISTINGS_DATA_");<br>        break;<br>        case "GetReportList":  <br>            $this->setParm("Action","GetReportList");   <br>            $this->setParm("ReportRequestIdList.Id.1",$this->ReportRequestId);<br>        break;<br>        case "GetReport":  <br>            $this->setParm("Action","GetReport");   <br>            $this->setParm("ReportId",$this->ReportId);  <br>        break;   <br>          <br>              <br>        }<br>        <br>     }<br>

$url1=$aa->geturl("RequestReport");
$url2=$aa->geturl("GetReportList");
$url3=$aa->geturl("GetReport");

我明明每次执行前都清除了数组
$this->parameter=array();
但输出时，每次数组都包含了上次所赋的值。
每次结果：
$url1：ReportType=_GET_MERCHANT_LISTINGS_DATA_
$url2：ReportType=_GET_MERCHANT_LISTINGS_DATA_&ReportRequestIdList.Id.1=123456
$url3：ReportType=_GET_MERCHANT_LISTINGS_DATA_&ReportRequestIdList.Id.1=123456&ReportId=123456

请问是哪里的问题啊？？？
------解决思路----------------------
你没有给出 getData 的定义，不好说
------解决思路----------------------

<br>//看看是不是下面的方法哪里处理了<br>getData();<br>