Clean Up Old PHP code - Optimize Performance

=== Before you bid on this project === We are looking for PHP experts only - you need to eat, sleep and breathe PHP. === Before you bid on this project === We have a Page in our Custom CMS that is used for adding content. The code is old - and there are many areas where it can be cleaned up and streamlined. Perhaps a framework? We also need to separate the code from the html. The overall object of this project is to: Optimize the code Speed the page up Identify and fix any security issues Make it easy to make changes, or additions, in the future. Integrate Ajax to reduce page re-loading. A copy of the file has been uploaded.