Laravel : Undefined offset:3?

I get an error

Undefined offset: 3

What i want is in edit if $view_360 and $iframe_title empty to find that iframe and delete it . Any suggestion how can i do that?

for ($i=0; $i <= count($view_360); $i++) {

      if(!empty($view_360[$i])){
        if($request->view360_id[$i] == "undefined"){
          $view_360_iframe = new View360();
        }
        else {
         $view_360_iframe = View360::findOrFail($request->view360_id[$i]);
        }
        $view_360_iframe->property_id = $property->id;
        $view_360_iframe->title = $iframe_title[$i];
        $view_360_iframe->iframe = $view_360[$i];
        $view_360_iframe->save();

      }
      if(empty($view_360[$i]) && empty($iframe_title[$i])){
          $view_360_iframe = View360::findOrFail($request->view360_id[$i]);
          $view_360_iframe->delete();
      }
    }

via None