如何將屬性添加到xml節點？

Question

我在php中生成以下xml。

PHP代碼： -

header("Content-type: text/xml"); 
echo "<?xml version='1.0' encoding='UTF-8'?>"; 
echo "<Response>"; 
echo "<Dial>"; 
echo $client_no; 
echo "</Dial>"; 
echo "<Say>The call failed or the remote party hung up. Goodbye.</Say>"; 
echo "</Response>"; 

輸出： -

<Response> 
    <Dial>919880022477</Dial> 
    <Say> 
     The call failed or the remote party hung up. Goodbye. 
    </Say> 
</Response> 

現在我想屬性添加到撥號節點。 是這樣的： -

<Dial callerId="jitu">919880022477</Dial> 

Answer 1

試試這個

echo "<Dial callerID='jitu'>";