Joomla! Documentation™

Description

Logout authentication function.

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Syntax

logout($userid=null, $options=array())

Parameter Name	Default Value	Description
$userid	null	$userid The user to load - Can be an integer or string - If string, it is converted to ID automatically
$options	array()	$options Array( 'clientid' => array of client id's )

Defined in

libraries/joomla/application/application.php

Importing

jimport( 'joomla.application.application' );

Source Body

function logout($userid = null, $options = array())
{
        // Initialize variables
        $retval = false;

        // Get a user object from the JApplication
        $user = &JFactory::getUser($userid);

        // Build the credentials array
        $parameters['username'] = $user->get('username');
        $parameters['id']               = $user->get('id');

        // Set clientid in the options array if it hasn't been set already
        if(empty($options['clientid'])) {
                $options['clientid'][] = $this->getClientId();
        }

        // Import the user plugin group
        JPluginHelper::importPlugin('user');

        // OK, the credentials are built. Lets fire the onLogout event
        $results = $this->triggerEvent('onLogoutUser', array($parameters, $options));

        /*
         * If any of the authentication plugins did not successfully complete
         * the logout routine then the whole method fails.  Any errors raised
         * should be done in the plugin as this provides the ability to provide
         * much more information about why the routine may have failed.
         */
        if (!in_array(false, $results, true)) {
                setcookie( JUtility::getHash('JLOGIN_REMEMBER'), false, time() - 86400, '/' );
                return true;
        }

        // Trigger onLoginFailure Event
        $this->triggerEvent('onLogoutFailure', array($parameters));

        return false;
}

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Examples

Log the current user out

$app = JFactory::getApplication();              
$user = JFactory::getUser();
$user_id = $user->get('id');            
$app->logout($user_id, array());