[PHP知识库]laravel框架的参数验证

最近几年一直在用laravel框架，忽略了框架自身的验证类，细细研究，发现还挺好用，看了源码，发现参数的用途，第一个参数时接收到的参数，第二个参数是规则，第三个规则定义，第四个参数每个参数的自定义属性，可以写参数的汉字翻译，需要写上每个参数的规则

public function transferOut(Request $request){
    $params = $request->all();
    $validator = \Validator::make($params,[
        'accountId'             =>  'required',
        'type'                  =>  'required',
        'amount'                =>  'required',
    ],[
        'required'              =>  ':attribute不能为空'
    ],[
        'accountId'            =>  '用户ID',
        'type'                  =>  '转出类型',
        'amount'                =>  '转出金额',
    ]);
    if($params['amount'] <= 0){
        return responseJson(400,'转出金额必须大于0元');
    }
    if ($validator->fails()) {
        return ['code' => 400, 'msg' => $validator->errors()->first()];
    }
    return WalletServiceImpl::transferOut($params);
}
/**
 * Create a new Validator instance.
 *
 * @param array $data
 * @param array $rules
 * @param array $messages
 * @param array $customAttributes
 * @return \Illuminate\Validation\Validator 
 * @static 
 */ 
public static function make($data, $rules, $messages = array(), $customAttributes = array())
{
    return \Illuminate\Validation\Factory::make($data, $rules, $messages, $customAttributes);
}