One way to tell if your server is capable of displaying and processing php is to create a page called 'phpinfo.php'. Just put this simple code in the page. Upload it to your server. Open it in a browser to display exactly what you have on your php server:
<? phpinfo(); ?>
Keep in mind that if you have MySQL database (phpinfo will display the fact if you do) you can save your user input data for future recall. You can use: 'Phpmyadmin' as your a db admin tool. You will need to access and write your data to the db as well as email it.