解析/解释从PHP中的Web服务检索到的XML
问题描述:
我正在向外部公司的Web服务发送HTTP GET请求。这个回来很好,但我遇到了解释什么会回来的问题。该响应以XML格式发送。我试图使用SimpleXML(我承认,我不熟悉),并且无法弄清楚。我需要做的是将XML中收到的内容分配给PHP变量,然后回显它。我需要分配的变量是“SessionToken”到$ sessionid。我该怎么做呢?解析/解释从PHP中的Web服务检索到的XML
这里是我的代码示例:
error_reporting(E_ALL);
$request = 'http://ws.examplesite.com/test/test.asmx/TestFunction?Packet=<Packet><Email>[email protected]</Email><Password>testpassword</Password></Packet>';
$session = curl_init($request);
curl_setopt($session, CURLOPT_HEADER, true);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($session);
curl_close($session);
$status_code = array();
preg_match('/\d\d\d/', $response, $status_code);
switch($status_code[0]) {
case 200:
break;
case 503:
die('Your call to Web Services failed and returned an HTTP status of 503. That means: Service unavailable. An internal problem prevented us from returning data to you.');
break;
case 403:
die('Your call to Web Services failed and returned an HTTP status of 403. That means: Forbidden. You do not have permission to access this resource, or are over your rate limit.');
break;
case 400:
die('Your call to Web Services failed and returned an HTTP status of 400. That means: Bad request. The parameters passed to the service did not match as expected. The exact error is returned in the XML response.');
break;
default:
die('Your call to Web Services returned an unexpected HTTP status of:' . $status_code[0]);
}
if (!($xml = strstr($response, '<?xml'))) {
$xml = null;
}
echo $xml;
下面是响应的一个例子:
<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://ws.example.com/resumes/">
<Packet>
<Errors />
<SessionToken>1234567890</SessionToken>
</Packet>
</string>
怎样从XML提取变量并为它们分配到PHP变量?
阅读PHP手册。网上有数以千计的教程如何做到这一点。 – cweiske 2011-04-18 20:16:03