转换为字符串错误

Question

可捕获的致命错误：

  

类mysqli_result的对象无法在行中转换为字符串：99

如何解决此错误？

if($login_data)
    {
       $user_id = $login_data->id;
       $login_data=$this->session->set_userdata(array('user_id'=>$user_id));
      // print_r($login_data);
       return redirect("user/dashboard/");
          }

Answer 1

您的$ phone变量覆盖了原始变量。试试这个：

更改

$phone = mysqli_query($this->connection,"SELECT Phone from Users WHERE Phone = '$phone'");

到

$phone_exist = mysqli_query($this->connection,"SELECT Phone from Users WHERE Phone = '$phone'");