Nice article that taught me how to increase tremendously the speed of page rendering – the time elapsed between the clicking to request a page and the reading it !! MaxPC – Tutorials – Introducing PHP: Caching
You don’t want to read it all ? Here is the spoiler : add this line at the very beginning of your php script, it will zip the content and the user browser will unzip it behind the scenes
But read the article for more advanced caching techniques….
Further information on Gzip is to be found here Learning Journal – Compress your web
Last but not least: test your Gzip inplementation via this cool online tool here ! Gzip online test tool