1、find($id) ~~~ $er->find(1); ~~~ 2、findAll() ~~~ $er->findAll(); ~~~ 3、findOneBy($criteria) ~~~ $er->findOneBy(array('name'=>'user')); ~~~ 4、findBy($criteria,$orderBy,$limit,$offset) ~~~ $er->findBy(array('name'=>'user'),array('id'=>'ASC'),20,0); ~~~