我如何设置我的PHP以输入用户IP

Question

Could someone help me please?

Im trying to make it so that when a user logs on , it checks if there is anything in the IP part for that user in cPanel, and if its empty then update it with their IP, but if it isnt empty then do nothing.

I tried doing

if(empty($row['IP']))
{
//set ip
}

But for some reason i cant get the set ip to work.

Answer 1

for getting the client IP by this code:

$theClientIp = $_SERVER['REMOTE_HOST'];

then you can make it session like this:

session_start();
$_SESSION['ip']=$theClientIp;

everywhere you can get the ip value by echoing this

session_start(); $_SESSION[ip'];