Yii框架实现邮箱激活的方法【数字签名】

//发送邮箱,激活账号public function actionEmail(){    $email=Yii::$app->request->get('email');    //数字签名    $em_1=md5($email);    //邮箱发送    $mail= Yii::$app->mailer->compose();    $mail->setTo($email);    $mail->setSubject("激活邮箱");    //发布可以带html标签的文本    $mail->setHtmlBody("<a href='http://www.small2.com/backend/web/index.php?r=login/live&em_1=".$em_1."&email=".$email."'>点击此链接</a>");    if($mail->send())      echo "success";    else      echo "false";    die(); //邮箱发送ok}//激活账号public function actionLive(){   $email=Yii::$app->request->get('email');   $em_1=Yii::$app->request->get('em_1');   //echo $em_1;die;   $em_2=md5($email);   //echo $em_2;die;   if($em_1==$em_2)   {     $res=Yii::$app->db;     $data=$res->createCommand()->update("login",["status"=>1],["email"=>$email])->execute();     if($data)     {      echo "<script>alert('激活成功，可登录');location.href='index.php?r=login/login'</script>";     }     else     {       echo "<script>alert('激活失败');location.href='index.php?r=login/login'</script>";     }   }   else   {     echo "<script>alert('参数错误,重新激活');location.href='index.php?r=login/login'</script>";   }}