为什么我的变量在for循环语句中取消定义？

Question

为什么在if语句中定义的for循环语句中变量$ myVar未定义，如下所示（Laravel 5.2中的刀片模板）？

  $myVar = [];

  @if (empty($myVar))
     Var is empty.
  @endif

  @foreach ($myVar as $var)
    <li>{{$var}}</li>
  @endforeach

Answer 1

也尝试isset

$myVar = [];

@if (empty($myVar))
   Var is empty.
@endif

@if (isset($myVar))
   Var is isset.
@endif


@foreach ($myVar as $var)
   <li>{{$var}}</li>
@endforeach

Answer 2

我通过更改返回视图（'process'，withMyVar（$ myVar）; with view（'process'，compact（$ myVar）;

）使其工作