SimpleXML Returns 0 Element - php

Question

I'm taking my response from a Soap Request, and passing it into a new SimpleXML construct.
$response = $this->client->$method(array("Request" => $this->params));
$response_string = $this->client->__getLastResponse();
$this->response = new Classes_Result(new SimpleXMLElement($result));
If I echo the $response_string, it outputs a proper xml string. Here is a snippet as it's quite long.
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body><GetClassesResponse xmlns="http://clients.mindbodyonline.com/api/0_5">
<GetClassesResult>
<Status>Success</Status>
<XMLDetail>Full</XMLDetail>
<ResultCount>6</ResultCount>
<CurrentPageIndex>0</CurrentPageIndex>
<TotalPageCount>1</TotalPageCount>
<Classes>
<Class>
<ClassScheduleID>4</ClassScheduleID>
<Location>
<SiteID>20853</SiteID>
....</soap:Envelope>
Hoever, when I try to work with this object, I get errors or if I dump the object it outputs:
object(SimpleXMLElement)#51 (0)
Any ideas why this might be happening?

Answer 1

You are not actually using $response_string, and you have not set $result anywhere, which you have passed to new SimpleXMLElement($result).
Perhaps you intend to build a SimpleXML object with the $response_string string via simplexml_load_string()?
$response = $this->client->$method(array("Request" => $this->params));
$response_string = $this->client->__getLastResponse();
// Load XML via simplexml_load_string()
$this->response = new Classes_Result(simplexml_load_string($response_string));
// Or if you do expect a SimpleXMLElement(), pass in the string
$this->response = new Classes_Result(new SimpleXMLElement($response_string));
The <soap:Body> element of your SOAP response is namespaced with (soap). To loop over it with SimpleXML, you must provide the correct namespace:
// After creating new SimpleXMLElement()
var_dump($this->response->children("http://schemas.xmlsoap.org/soap/envelope/"));
// class SimpleXMLElement#2 (1) {
// public $Body =>
// class SimpleXMLElement#4 (0) {
// }
// }
To loop over the body:
foreach ($this->response->children("http://schemas.xmlsoap.org/soap/envelope/") as $b) {
$body_nodes = $b->children();
// Get somethign specific
foreach ($body_nodes->GetClassesResponse->GetClassesResult as $bn) {
echo $bn->ResultCount . ", ";
echo $bn->TotalPageCount;
}
}
// 6, 1