that code is not present on the form.txt or php_script.txt files you attached to your last message.
you have the form set to post to the php_script.php page, the server validation must occur on the forms action pae; php_script.php
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.