function execute()
 {
     $user = ConnectionHelper::userLogin();
     $response = array('result' => '[`Title profile change password success`]');
     if (!$user || !Request::post('old_password') || !Request::post('new_password') || !Request::post('repeat_password')) {
         return array('result' => '[`Title profile change password error`]');
     }
     if (md5(Request::post('old_password')) != $user['password'] || Request::post('new_password') != Request::post('repeat_password')) {
         return array('result' => '[`Title profile change password error`]');
     }
     $model = new connectionUserModel();
     $password = Request::post('new_password');
     if (!Validator::Field($password, $model->regFields['password'])) {
         return array('result' => '[`Title profile change password error`]');
     }
     $model->changePassword($user['id'], $password);
     return $response;
 }