php - Notice: Undefined offset: 9 -

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• reference - error mean in php? 30 answers

i'm working symfony , php , i'm new in this. want echo user's cars.

class usercontroller extends controller {        public function indexaction($uname)     {         $cars = new cars();         $user = new user();         $models = new models();         $brands = new brands();         $a = 1;          $em = $this -> getdoctrine() -> getentitymanager();         $id = $em -> getrepository("obcarstest1bundle:user") ->findonebyuname($uname);         array ($usercars = $em -> getrepository("obcarstest1bundle:cars") ->findbyiduser($id));         //$modelid = $em -> getrepository("obcarstest1bundle:models")->findbyid($usercars);         //$brandsid = $em -> getrepository("obcarstest1bundle:brands")->findonebyid($modelid);          while($usercars[$a]->getid() != null)         {             if(! isset($usercars[$a]))             {                 $usercars[$a] = null;             }             //i want see cars of users             echo ('created user :  '.$usercars[$a]->getname());             //return new response('created user :  '.$usercars[$a]->getid());             $a++;         }          return new response('ma akal');          //return $this->render('obcarstest1bundle:default:index.html.twig', array('usercars' => $usercars));     } 

now code looks (before making changes) i'm having error:

notice: undefined property: obcarstest1bundle\entity\cars::$getname

i searched problem , tried fix , change in code got same result.

class usercontroller extends controller {        public function indexaction($uname)     {         $cars = new cars();         $user = new user();         $models = new models();         $brands = new brands();         $a = 0;          $em = $this -> getdoctrine();         $id = $em -> getrepository("obcarstest1bundle:user") ->findonebyuname($uname);         $usercars = $em -> getrepository("obcarstest1bundle:cars") ->findbyiduser($id);         //$modelid = $em -> getrepository("obcarstest1bundle:models")->findbyid($usercars);         //$brandsid = $em -> getrepository("obcarstest1bundle:brands")->findonebyid($modelid);          foreach($usercars $car)         {             echo "$car->getname() <br>";         }           return new response('ma akal');          //return $this->render('obcarstest1bundle:default:index.html.twig', array('usercars' => $usercars));     } 

there 2 problems here:

1. array indices 0-based , use $a = 1; missing out on first element;

2. you should not loop on array using while loop run problems / errors / warnings when there no more elements, loop ends warning definition:

   while($usercars[$a]->getid() != null)
   
   instead should use foreach loop loop on every element:

   foreach ($usercars $usercar) { // not sure if need this, guess don't: if ($usercar->getid() != null) { ...