Validating multiple files in array

You can validate files array like any input array in Laravel 5.2. This feature is new in Laravel 5.2.

$input_data = $request->all();

$validator = Validator::make(
    $input_data, [
    'image_file.*' => 'required|mimes:jpg,jpeg,png,bmp|max:20000'
    ],[
        'image_file.*.required' => 'Please upload an image',
        'image_file.*.mimes' => 'Only jpeg,png and bmp images are allowed',
        'image_file.*.max' => 'Sorry! Maximum allowed size for an image is 20MB',
    ]
);

if ($validator->fails()) {
    // Validation error.. 
}

Please try this:

public function fileUpload(Request $request) {
    $rules = [];
    $files = count($this->input('files')) - 1;
    foreach(range(0, $files) as $index) {
        $rules['files.' . $index] = 'required|mimes:png,jpeg,jpg,gif|max:2048';
    }

    $validator = Validator::make($request->all() , $rules);

    if ($validator->fails()) {
        return response()->json(array(
            'success' => false,
            'errors' => $validator->getMessageBag()->toArray()
        ) , 400);
    }
}