PHP is the most used programming language on the web today. This fact is actually scary when it comes to PHP security as many hackers have a large collection to pick their victims. So, let me give you a few tips on how to secure PHP web site or application.

You built your site and everything is working fine, but when there is a lot of users on the site, your database becomes a bottleneck. I will show you how to deal with it using simple file cache system for your database results.

You have a great resultset taken from database, it has some datetime fields, and you want to format it differently then MySQL presented it? Here is a small trick.