Logging SOAP envelope in third party library - php

Question

I am attempting to add logging for the envelope generated by a third party library. I am modifying the updateMetadataField() method below.
I am creating $client like so:
$client = new UpdateClient($UPDATE_END_POINT, $USER_AUTH_ARRAY);
I have tried both $this->client->__getLastRequest() and $this->__getLastRequest() with the same error as a result.
When the SoapClient is instantiated trace is set to true.
Error is
Fatal error: Call to undefined method UpdateClient::__getLastRequest()
So how do I correctly access the __getLastRequest() method?
$USER_AUTH_ARRAY = array(
'login'=>"foo",
'password'=>"bar",
'exceptions'=>0,
'trace'=>true,
'features' => SOAP_SINGLE_ELEMENT_ARRAYS
);
class UpdateClient {
private $client;
public function __construct($endpoint, $auth_array) {
$this->client = new SoapClient($endpoint, $auth_array);
}
public function updateMetadataField($uuid, $key, $value) {
$result = $this->client->updateMetadataField(array(
'assetUuid' => $uuid,
'key' => $key,
'value' => $value)
);
if(is_soap_fault($result)) {
return $result;
}
return $result->return . "\n\n" . $this->client->__getLastRequest();
} // updateMetadataField()
} // UpdateClient
UPDATE - adding calling code This code iterates over an array which maps our data to the remote fields.
What I am hoping to do is begin storing the envelope we send to aid in debugging.
$client = new UpdateClient($UPDATE_END_POINT, $USER_AUTH_ARRAY);
foreach ($widen_to_nool_meta_map as $widen => $nool) { // array defined in widen.php
if ($nool != '') {
// handle exceptions
if ($nool == 'asset_created') { // validate as date - note that Widen pulls exif data so we don't need to pass this
if (!strtotime($sa->$nool)) {
continue;
}
} else if ($nool == 'people_in_photo' || $nool == 'allow_sublicensing' || $nool == 'allowed_use_pr_gallery') {
// we store as 0/1 but GUI at Widen wants Yes/No
$sa->$nool = ($sa->$nool == '1') ? 'Yes' : 'No';
} else if ($nool == 'credit_requirements') {
$sa->$nool = $sa->credit_requirements()->label;
}
$result = $client->updateMetadataField($sa->widen_id, $widen, $sa->$nool);
if(is_soap_fault($result)) {
$sync_result = $sync_result . "\n" . $result->getMessage();
} else {
$sync_result = $sync_result . "\n" . print_r($result, 1);
}
} // nool field set
} // foreach mapped field

Answer 1

If you want to access UpdateClient::__getLastRequest() you have to expose that method on the UpdateClient class since the $client is a private variable. The correct way of calling it is $this->client->__getLastRequest().
Take a look at this working example, as you can see I'm consuming a free web service for testing purposes.
<?php
$USER_AUTH_ARRAY = array(
'exceptions'=>0,
'trace'=>true,
'features' => SOAP_SINGLE_ELEMENT_ARRAYS
);
class TestClient {
private $client;
public function __construct($endpoint, $auth_array) {
$this->client = new SoapClient($endpoint, $auth_array);
}
public function CelsiusToFahrenheit( $celsius ) {
$result = $this->client->CelsiusToFahrenheit(array(
'Celsius' => $celsius
)
);
if(is_soap_fault($result)) {
return $result;
}
return $result;
}
public function __getLastRequest() {
return $this->client->__getLastRequest();
}
}
try
{
$test = new TestClient( "http://www.w3schools.com/webservices/tempconvert.asmx?wsdl", $USER_AUTH_ARRAY);
echo "<pre>";
var_dump($test->CelsiusToFahrenheit( 0 ));
var_dump($test->__getLastRequest());
var_dump($test->CelsiusToFahrenheit( 20 ));
var_dump($test->__getLastRequest());
echo "</pre>";
}
catch (SoapFault $fault)
{
echo $fault->faultcode;
}
?>