count（）：参数必须是在laravel上实现Countable的数组或对象

Question

I just set the code as below and it's show the error. May I know how to fix it?

public function productsCat(Request $request){
    $cat_id = $request->cat_id;

    $priceCount = count($request->price);
}

Answer 1

如果您使用的是PHP 7.2，请使用@count抑制此错误

Answer 2

You can use the laravel helper (collect):

public function productsCat(Request $request){
    $cat_id = $request->cat_id;

    $priceCount = collect($request->price)->count();
}