MailChimp (API v3) Subscribe Form with PHP, jQuery and AJAX

MailChimp provides a good tool to generate your custom sign up form which will serve most requirements well. Some users however, want a fully custom form or integrate it with existing template they already own.

This is an update from previous version which was still using MailChimp API v1.

Tools/Credits:

• jQuery
• jQuery Validation
• MailChimp API v3 PHP Wrapper