Zend Framework 101: Zend_Soap

By Quentin Zervaas, 8 August 2009 PHP SOAP Zend Framework Download PDF (3 comments)

Handle SOAP requests

Next we must handle any requests to the web service. This involves filling in the "else" block from the previous listing.

To achieve this, we use the Zend_Soap_Server class. Just like Zend_Soap_AutoDiscover, it needs to the know the name of the class that holds the web service methods.

Additionally, when we instantiate Zend_Soap_Server we need to pass to it the URL of the web service. This is so the server knows which methods to handle, as well its data types (Zend_Soap_Server doesn't do any auto-discovery of the class you pass to it with setClass()).

You can either hard-code the URL of the WSDL file, or you can auto-generate its location as in Listing 4.

Note: This URL auto-generator is somewhat simple. You may need to account for different port names or for using HTTPS.

Listing 4 shows how to instantiate the Zend_Soap_Server class, set the WSDL, set the PHP class and then handle the request.

Listing 4 Handle SOAP requests (webservice.php)

<?php
    require_once('MyWebService.php');
 
    if ($_SERVER['QUERY_STRING'] == 'wsdl') {
        require_once('Zend/Soap/AutoDiscover.php');
 
        $auto = new Zend_Soap_AutoDiscover();
        $auto->setClass('MyWebService');
        $auto->handle();
    }
    else {
        require_once('Zend/Soap/Server.php');
 
        $wsdl = sprintf(
            'http://%s%s?wsdl',
            $_SERVER['HTTP_HOST'],
            $_SERVER['SCRIPT_NAME']
        );
 
        $soapServer = new Zend_Soap_Server($wsdl);
        $soapServer->setClass('MyWebService');
        $soapServer->handle();
    }
?>

That's all there is to it. The next step is to actually consume the web service, as covered in the next section.

• Next: Consuming the Web Service