ZEND PHP 5 Certification STUDY GUIDE

208 ” XML and Web Services
way data is encoded, or whether the entire SOAP exchange is to be compressed, and
so on.
i
If you are accessing a SOAP service that does not have a WSDL file, it is possible to
create a SOAP client in non-WSDL mode by passing a NULL value to the SoapClient
constructor instead of the location of the WSDL file. In this case, you will have to pass
the URI to the Web service’s entry point as part of the second parameter.
Debugging
SoapClient provides special methods that make it possible to debug messages sent to
and received from a SOAP server. They can be turned on by setting the trace option
to 1 when instantiating a SOAP client object. This, in turn, will make it possible for
you to access the raw SOAP headers and envelope bodies. Here’s an example:
$client = new SoapClient(’http://api.google.com/GoogleSearch.wsdl’,
array(’trace’ => 1));
$results = $client->doGoogleSearch($key, $query, 0, 10, FALSE, ’’,
FALSE, ’’, ’’, ’’);
echo $client->__getLastRequestHeaders();
echo $client->__getLastRequest();
This will output something similar to the following (we trimmed down the text for
the sake of conciseness):
POST /search/beta2 HTTP/1.1
Host: api.google.com
Connection: Keep-Alive
User-Agent: PHP SOAP 0.1
Content-Type: text/xml; charset=utf-8
SOAPAction: "urn:GoogleSearchAction"
Content-Length: 900
Licensed to 482634 - Amber Barrow (itsadmin@deakin.edu.au)