如何在laravel中检查请求变量内部的空数组?

例如 product_id 返回为 array 像这样检查情况

if($request->product_id && is_array($request->product_id) && count($request->product_id) > 0) {
     //success validation
}else {
    //failed validation 
}

 if (count($request->specificationkeys) == 0 && count($request->specificationvalues) == 0){
     //your logic for empty
  }else{
    //Your logic for not empty  
 } 

试试这个:

public function specificationsave(Request $request) {   
    if (isset($request->product_id) && !empty($request->product_id)) {
        if (is_array($request->specificationkeys) && 
            count($request->specificationkeys) !== 0 && 
            is_array($request->specificationvalues) && 
            count($request->specificationvalues) !== 0) {
            return response()->json(["message" => 'Empty form submitted'], 202);
        } else {
            // something code 
        }
    } else {
        return response()->json(["message" => 'something went wrong with product'], 403);
    }
}