php - 在 Laravel 中验证 2 个数字的幂

Question

如何验证 1 到 1000 之间的数字(它们是 2 的幂)？

public function rules()
{
  return [
   'threshold' => 'required'|between:1,1000|power??
  ];
}

Answer 1

您可以在验证中使用闭包:

public function rules()
    {
        return [
            'threshold' => [
                'required',
                'between:1,1000',
                function ($attribute, $value, $fail) {
                    if ($value == 0 || ($value & ($value - 1)) != 0) {
                        $fail($attribute . ' is not power of 2!');
                    }
                },
            ]
        ];
    }

查看 laravel 文档 => Validation