arrays - Laravel - 检查数组中是否存在值

Question

为什么这段代码每次都返回 false？

$lics = collect(['lic100' => auth()->user()->lic100, 'lic250' => auth()->user()->lic250, 'lic500' => auth()->user()->lic500]);
$licsowned = $lics->filter()->keys();
$haslicense = property_exists($licsowned, $data['lictype']);

$lics 拥有：

Illuminate\Support\Collection {#367 ▼
 #items: array:3 [▼
  0 => "lic100"
  1 => "lic250"
  2 => "lic500"
 ]
}

$data['lictype'] 有值lic250

我也尝试过 in_array() 但它给出了错误消息，即该值必须是一个数组并且我传递了一个对象。

标签： arrayslaravelcollectionscontains

Answer 1

您需要使用实例contains()方法。Collection

例如：

$collection = collect(['name' => 'Desk', 'price' => 100]);

$collection->contains('Desk');

或者，在您的任务中：

$lics = collect(['lic100' => auth()->user()->lic100, 'lic250' => auth()->user()->lic250, 'lic500' => auth()->user()->lic500]);

$lics->contains('lic250');

更多信息：

https://laravel.com/docs/7.x/collections#method-contains