[FIXED] How do I check if a users input is a valid IP address or not?

Issue

I want to check if an entered input is a valid IP address or not. I would like a specific function that will help me validate a users input.

Solution

filter_var($ip, FILTER_VALIDATE_IP)

http://www.php.net/filter_var

Example:

if (filter_var($ip, FILTER_VALIDATE_IP)) {echo 'Valid IP';}
else {echo 'Not Valid IP';}

Answered By - deceze

Answer Checked By - Cary Denson (PHPFixing Admin)