namespace app\service\controller;
use think\controller;

class CheckUrl extends Controller{

  const TOKEN = 'API'; // 前后端统一的口令

  //响应前台的请求

  public function respond(){

    //验证身份

    $timeStamp = $_GET['t']; // 时间戳

    $randomStr = $_GET['r']; // 随机字符串

    $signature = $_GET['s']; //签名

    $str = $this -> arithmetic($timeStamp, $randomStr);

    if($str != $signature){

      return ['status' => 0, 'msg' => '验证失败', 'data' => []];

    }

  }

  /**

   * @param $timeStamp 时间戳

   * @param $randomStr 随机字符串

   * @return string 返回签名

   */

  public function arithmetic($timeStamp, $randomStr){
		
		$arr = [
			'timeStamp' => $timeStamp,
			'randomStr' => $randomStr,
			'token' => self::TOKEN

		];

    //按照首字母大小写顺序排序

    sort($arr,SORT_STRING);

    //拼接成字符串

    $str = implode($arr);

    //进行加密

    $signature = sha1($str);

    $signature = md5($signature);

    //转换成大写

    $signature = strtoupper($signature);

    return $signature;

  }

}

<form action="do.php" method="POST">

<"text" name="sec_name" value=""/> // 实际要传递的值

 <input type="hidden" name="module" value="<"/>

 <input type="hidden" name="timestamp" value="<"/>

 <input type="hidden" name="token" value="<"/>

</form>

$module = $_POST['module'];

$timestamp = $_POST['timestamp'];

$token = md5($module.'#$@%!^*'.$timestamp);

if($token != $_POST['token']){

return ['status' => 0, 'msg' => '非法数据来源', 'data' => []];

}

$sec_name=$_POST['sec_name'];

//PHP数据处理.....