<?php// Doctrine_Manager controls all the sessions $manager=Doctrine_Manager::getInstance();// open first session$session=$manager->openSession(newPDO("dsn","username","password"),"session 1");// open second session$session2=$manager->openSession(newPDO("dsn2","username2","password2"),"session 2");$manager->getCurrentSession();// $session2$manager->setCurrentSession("session 1");$manager->getCurrentSession();// $session// iterating through sessionsforeach($manageras$session){}?>