API16:JSessionStorageDatabase/gc

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Description

Garbage collect stale sessions from the SessionHandler backend.

Syntax

gc($lifetime=1440)

Parameter Name	Default Value	Description
$lifetime	1440	The maximum age of a session.

Returns

boolean True on success, false otherwise.

Defined in

libraries/joomla/session/storage/database.php

Importing

jimport( 'joomla.session.storage.database' );

Source Body

function gc($lifetime = 1440)
{
        // Get the database connection object and verify its connected.
        $db = &JFactory::getDbo();
        if (!$db->connected()) {
                return false;
        }
 
        // Determine the timestamp threshold with which to purge old sessions.
        $past = time() - $lifetime;
 
        // Remove expired sessions from the database.
        $db->setQuery(
                'DELETE FROM `#__session`' .
                ' WHERE `time` < '.(int) $past
        );
        return (boolean) $db->query();
}

Examples

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