Advanced Search

PHP (RegEx) IP Address Validation

/ Published in: PHP
Save to your folder(s)
A simple method of validating an IP address using PHP and regular expressions

Expand | Embed | Plain Text

Copy this code and paste it in your HTML 
  1. $string = "255.255.255.255";
  2. if (preg_match(
  3. '/^(?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)(?:[.](?:25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|\d)){3}$/',
  4. $string)) { 
  5. echo "IP address is good.";
  6. }

URL: http://www.thejwalker.com

Report this snippet


Comments

RSS Icon Subscribe to comments

You need to login to post a comment.