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Laravel 8 Arr::add() {#collection-method}
2021-07-02 16:48:58 更新
如果给定的键在数组中不存在或给定的键的值被设置为 null ，那么 Arr::add 函数将会把给定的键值对添加到数组中：
use Illuminate\Support\Arr;
$array = Arr::add(['name' => 'Desk'], 'price', 100);
// ['name' => 'Desk', 'price' => 100]
$array = Arr::add(['name' => 'Desk', 'price' => null], 'price', 100);
// ['name' => 'Desk', 'price' => 100]