Select 如何用WSDL数据（部分）的所有元素填充PHP下拉框？

当您下载SoapUI时，有一个关于货币的WSDL的好例子

这个：

在我的PHP页面上，我想要所有 在下拉框中

像这样：

<select name="eneagram" >
   <option value="USD">USD</option>
   <option value="JPY">JPY</option>

美元
日元

我所做的是：

    <?php
if(isset($_POST['getdata'])){


//$naam=$_POST['naam'];
//$date=$_POST['date'];
$type=$_POST['type'];
//$core=$_POST['core'];
//$management=$_POST['management'];
//$tools = json_encode($_POST['tools']);
//$tools=$_POST['tools'];
//$analytisch=$_POST['analytisch'];
$eneagram=$_POST['eneagram'];

try{
    $soap_client = new
    //SoapClient("http://www.webservicex.net/stockquote.asmx?WSDL");
    SoapClient("http://www.webservicex.com/currencyconvertor.asmx?WSDL");
   // $vec = array("symbol"=>"DOX");

   $vec = array("FromCurrency"=>"$type", "ToCurrency"=>"$eneagram");
    $quote = $soap_client->ConversionRate($vec);
    echo $quote->ConversionRateResult;
    }
    catch(SoapFault $exception)
    {
        echo $exception->getMessage();
    }



if(true == false ){
    echo "<label class='err'>All fields are required</label>";
    }

        else{

    }


?>
<script>alert('Calculated the conversion rate!');</script>
<?php }
}
 ?>

    <?php
if(isset($_POST['getdata'])){


//$naam=$_POST['naam'];
//$date=$_POST['date'];
$type=$_POST['type'];
//$core=$_POST['core'];
//$management=$_POST['management'];
//$tools = json_encode($_POST['tools']);
//$tools=$_POST['tools'];
//$analytisch=$_POST['analytisch'];
$eneagram=$_POST['eneagram'];

try{
    $soap_client = new
    //SoapClient("http://www.webservicex.net/stockquote.asmx?WSDL");
    SoapClient("http://www.webservicex.com/currencyconvertor.asmx?WSDL");
   // $vec = array("symbol"=>"DOX");

   $vec = array("FromCurrency"=>"$type", "ToCurrency"=>"$eneagram");
    $quote = $soap_client->ConversionRate($vec);
    echo $quote->ConversionRateResult;
    }
    catch(SoapFault $exception)
    {
        echo $exception->getMessage();
    }



if(true == false ){
    echo "<label class='err'>All fields are required</label>";
    }

        else{

    }


?>
<script>alert('Calculated the conversion rate!');</script>
<?php }
}
 ?>