Now that you have built that awesome site, you may start experiencing slower responses from the server as more people visit your page. What can you do to speed up your code?
phplens.com [1] has a great article on how to Optimize PHP [2]. It is a must read for anyone who is planning on their site taking off. In today's world of endless possible bottle-necks, you have to be aware of what you server can handle and what you can do to cut your server load in half.
Quote:
...PHP is a fast language, and many of the likely bottlenecks causing slow speeds lie outside PHP......you can see that biggest speed improvements are derived not from tweaking the code, but by simple global optimizations such as ob_start(), or using radically different algorithms such as HTML caching.