Array assignment problems

Array assignment problems

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

$ Url1 = $ aa-> geturl ("RequestReport ");
$ Url2 = $ aa-> geturl ("GetReportList ");
$ Url3 = $ aa-> geturl ("GetReport ");

I clearly cleared the array before each execution.
$ This-> parameter = array ();
However, in the output, each array contains the value assigned last time.
Results:
$ 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

Where is the problem ???

Reply to discussion (solution)

You have not defined getData.

// Check if the following method processes getData ();