带有post方法的PHP SOAP请求

Question

I have a code here and can get only current oil price but I need to get a result the same as the picture below. I have no idea to do this.

<?php
$soapUrl = "http://www.pttplc.com/webservice/pttinfo.asmx?op=CurrentOilPrice";

$xml_post_string = '<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
  <soap12:Body>
    <CurrentOilPrice xmlns="http://www.pttplc.com/ptt_webservice/">
      <Language>string</Language>
    </CurrentOilPrice>
  </soap12:Body>
</soap12:Envelope>';

$headers = array(
    "POST /webservice/pttinfo.asmx HTTP/1.1",
    "Host: www.pttplc.com",
    "Content-Type: application/soap+xml; charset=utf-8",
    "Content-Length: " . strlen($xml_post_string)
);

$url = $soapUrl;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml_post_string);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$response = curl_exec($ch);
curl_close($ch);

$response1 = str_replace("<soap:Body>", "", $response);
$response2 = str_replace("</soap:Body>", "", $response1);

$parser = simplexml_load_string($response2);
echo $parser->asXML();

Answer 1

You can use SOAP CLIENT is a good tool for use if you work with Web services. This is easy to use, automaticaly convert your response in SimpleXMLObject and you are able to use XPath to find easy your XML tag.