PHP ValidateCode::checkCode示例

 public function actionLogin()
 {
     $username = isset($_POST['username']) ? trim($_POST['username']) : '';
     $password = isset($_POST['password']) ? trim($_POST['password']) : '';
     $validate = isset($_POST['validate']) ? trim($_POST['validate']) : '';
     if (empty($username) || empty($password) || empty($validate)) {
         $this->location('/', array('error' => '参数错误'));
     }
     if (!ValidateCode::checkCode($validate)) {
         $msg = '验证码错误';
         $this->location('/', array('error' => $msg));
     } else {
         $sql = "SELECT * FROM ha_user WHERE usertype=4 and userstatus=1 and userid='{$username}' and password='******'";
         $data = App::db()->getRow($sql);
         if (!empty($data)) {
             $_SESSION['user'] = $data;
             $_SESSION['is_login'] = 1;
             $code = 200;
             $this->location('/', array('m' => 'main'));
         } else {
             $code = 401;
             $msg = '用户名或密码错误';
             $this->location('/', array('error' => $msg));
         }
     }
 }