SimpleXML Returns 0 Element

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?

Classes_Result? is it equivalent to var_dump ? you should echo / var_dump($result) instead. — Raptor
– Raptor, Commented Sep 28, 2012 at 2:24
Classes_Result is a class, which I am passing in a new SimpleXML object. The var_dump is in the Classes_Result class. — Richard Testani
– Richard Testani, Commented Sep 28, 2012 at 2:42

Michael Berkowski · Accepted Answer · 2012-09-28 12:52:26Z

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

Michael - I've used both methods here and both return an object with 0 elements. object(SimpleXMLElement)#44 (0) { } -- I am not 100% sure why. I could use the standard object returned by the soap client, but SimpleXML makes it easier to loop through. Would something with the XML string cause this at all?
@RichardTestani I see - it's because of the soap namespace. See addition above.

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