thinkphp添加request()->only(['user_id'=>0]);

某些版本的thinkphp没有request()->only(['user_id'=>0]);

只需要项目目录下的thinkphp/library/think/Request.php文件；

找到only方法，重新改写为即可

  
     public function only($name, $type = 'param')
    {
        $param = self::$type();
    
        if (is_string($name)) {
            $name = explode(',', $name);
        }
    
        $item = [];
        foreach ($name as $key => $val) {
    
            if (is_int($key)) {
                $default = null;
                $key     = $val;
            } else {
                $default = $val;
            }
    
            if (isset($param[$key])) {
                $item[$key] = $param[$key];
            } elseif (isset($default)) {
                $item[$key] = $default;
            }
        }
    
        return $item;
    }