Logging out from phpCAS is done by calling one of the phpCAS::logoutXxx() methods. Calling any of these methods will:

The behavior of the CAS server then depends on:

phpCAS::logout()

After logout, the CAS server prints the logout page.

phpCAS::logoutWithRedirectService($service)

After logout, the CAS server redirects the browser to the given URL.

If redirection is not enabled on the CAS server, the CAS server simply displays the logout page.

Deprecated for CAS servers > 3.3.5.

After logout, the CAS server shows a page with a link to the given URL.

Deprecated for CAS servers > 3.3.5.

If redirection is enabled, the CAs server redirects the browser to the given URL ($service) and the $url parameter is ignored.

Otherwise, the CAS server shows a page with a link to the given URL.

The service and url parameters can also be passed in an array:

call with an array	shortcut
logout(array())	logout()
logout(array('service'=>'www.myservicesite.com'))	logoutWithRedirectService('www.myservicesite.com')
logout(array('url'=>'www.myurlsite.com'))	logoutWithUrl('www.myurlsite.com')
logout(array('service'=>'www.myservicesite.com', 'url'=>'www.myurlsite.com'))	logoutWithRedirectServiceAndUrl('www.myservicesite.com', 'www.myurlsite.com')