聊天密码和用户名认证，获取IP和端口

Can you guys check this?I have a problem with this code i don't know which part but i think it's on the function authenticateUser. I just need to log in using this PHP in my android and when the user have logged in it will update the authenticationTime, IP and port but in my app i can only login and the table are not updated.Can you guys check this?I have a problem with t