Creating a web service client

Moodle 2.0

You need to have already setup a web service. You can get help from How to enable web services for ordinary users or How to enable web services for an external system . Then have a look to your security keys page. You'll find there your token and the web service documentation associated with this token.

Officially supported protocols

• REST: the Moodle REST server uses POST for parameters and XML for returned values. This server is not RESTfull.
• SOAP: the Moodle SOAP server is based on the Zend SOAP server (itself based on the PHP SOAP server). Zend publishes a Zend SOAP client. The current server implementation doesn't work with Java/.Net because we didn't generated a fully describe WSDL yet. If you are working on a Java/.Net client, follow or participate to the tracker issue MDL-20804
• XML-RPC: the Moodle XML-RPC server is based on Zend XML-RPC server. Zend also publishes a Zend XML-RPC client.
• AMF: the Moodle AMF server is based on the Zend AMF server. The test client can be found in Settings blocks > Site Administration > Development > Web service test client > AMF Test client.

PHP client examples

In all these client examples we will create two groups calling the web service function group_create_groups.

SOAP

The Moodle SOAP server extends Zend SOAP Server. It is recommended to have a look to the Zend SOAP client documentation.

XML-RPC

The Moodle XML-RPC server extends Zend XML-RPC Server. It is recommended to have a look to the Zend XML-RPC client documentation

$function = 'group_create_groups'; //see the web service documentation $params = array('search' => $search, 'downloadable' => $downloadable,

   'enrollable' => !$downloadable, 'options' => $options);

$serverurl = $huburl . "/local/hub/webservice/webservices.php"; require_once($CFG->dirroot . "/webservice/xmlrpc/lib.php"); $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $token); try {

   $result = $xmlrpcclient->call($function, $params);
   $courses = $result['courses'];
   $coursetotal = $result['coursetotal'];

} catch (Exception $e) {

   $errormessage = $OUTPUT->notification( 
       get_string('errorcourselisting', 'block_community', $e->getMessage()));

}