php获取前端提交数据类：支持危险数据过滤

1. 代码：

   /**
   * 获取前台提交的数据：支持危险数据自动过滤
   */
   class getRequest{
   /*
    判断前端传入方式，转换成能用数据
    */
   public function getRequestData(){
       $data;
       $ret;
       $contenttype = strtolower($_SERVER['CONTENT_TYPE']);
       $method = strtolower($_SERVER['REQUEST_METHOD']);
       if($contenttype == 'application/json'){
           $data = file_get_contents('php://input');
           $data = json_decode($data,true);
       }elseif(in_array($contenttype,array('application/x-www-form-urlencoded','multipart/form-data')) || $method == 'post'){
           $data = $_POST;
       }elseif(in_array($contenttype,array('application/x-www-form-urlencoded','multipart/form-data')) || $method == 'get'){
           $data = $_GET;
       }else{
           parse_str(file_get_contents('php://input'),$data);
       }
       $ret = $this->safetyData($data);
       return $ret;
   }
   /*
    内部函数：过滤危险数据
    */
   private function safetyData($data){
       foreach($data as $k=>$v){
           if(is_array($v)){
               $data[$k] = $this->safetyData($v);
           }else{
               $tmp = trim($v);
               $tmp = addslashes($tmp);
               $data[$k] = $tmp;
           }
       }
       return $data;
   }
   }

2. 用法：

   $getRequest = new getRequest();
   $data = $getRequest->getRequestData();
   var_dump($data);

3. 测试