User defined variables for mysql in active record

[eluser]Predator[/eluser]
** Quick and dirty hack

DB_active_rec.php

Code:

/**
         * Function to set user defined variables in mysql. Example: $this->db->set_user_variable('application_user_id', $user_id');
         *
         * @param type $key
         * @param type $value
         */
        public function set_user_variable($key, $value)
{
            $this->query('SET @'.$key.' = '.$value);
}