无法将IP地址放在数据库中

Question

I'm trying to put an ip-address in my database. If I do an echo like this:

echo $_SERVER['REMOTE_ADDR'];

But if I'm trying to put it in a variable or in the database it gives nothing, so in my database it says: NULL The commands I used for that:

$ip = $_SERVER['REMOTE_ADDR'];
mysql_query("UPDATE users SET last_ip='".$ip."' WHERE id=".$row['id']) or die(mysql_error());

I don't know what I'm doing wrong. Can someone help me with this please?

Thanks!

Answer 1

Your code is correct and should work. Unless as commented by @wallyk, the data type of the ip field is unsupported one.

However, just to make sure wrap the WHERE condition in ' (Single Quote) and try.