Zend FR

        // création de la liste des utilisateurs
        $table_user = new Model_DbTable_User();
        $users = $table_user->fetchAll();
        foreach($users as $u):
            $tab[]=$u->user_username;      <--------------------------A AMÉLIORER
        endforeach;

        // création de l'objet auto completion
        $user = new ZendX_JQuery_Form_Element_AutoComplete(
            'user_username',
            array(  'Label' => 'Current User *',
                    'required'=>true,
                    'filters'=>array('StripTags'),
                    'validators'=>array(
                    array(  'validator'=>'StringLength',
                            'options'=>array('min'=>'3'),
                            'breakChainOnFailure'=>true
                    )
                )
            )
        );
        $user->setJQueryParams(array('source' => $tab)); 

        // Vérification que le username n'est pas déja dans la base
        $usernameDoesntExist = new Zend_Validate_Db_RecordExists('user', 'user_username');
        $user->addValidator($usernameDoesntExist);

        foreach($users as $u):
            $tab[]=$u->user_username . ' ' . $u->user_firstName . ' ' . $u->user_lastName;    
        endforeach;