CSS or Cascading Style Sheets is a language used to describe the presentation of a document written in a markup language. If you're developing a very complex design for your site, CSS scripts become very long, and takes too much time to load. But a compressed CSS script can help your website load faster and easily maintain its functionality. Here, I've created a very simple CSS compressor using PHP to compress or reduce CSS script size.

You can read through the example code and see how it all works or you can download the code and see a live demo of it in action. His script does the compression on the fly, but it's not a far stretch to get it set up as a part of a build to output to a file on deployment.

love WordPress. I also love clean semantic HTML. Unfortunately, several of the standard WordPress theme functions return code that is a little untidy. For me, the primary culprits are wp_list_pages() and the newer wp_nav_menu(); both return an unordered list of page links.

He gives an example of a sample list generated by wp_nav_menu() that's full of badly formatted and unnecessary elements. To help fix the issue, he shares his regular expression-based call to strip out things like extra tabs, empty classes and all title attributes. Obviously you can customize this as you need, but it's a good start towards something that's a bit cleaner and up to code.

PHP has numerous ways to execute raw PHP code unless you the programmer stops it. Best way in preventing these methods is making sure you check the input of what your users are inputting, and making sure you escape all malicious actions that a hacker,cracker, kiddy scripter might want to do to your website.

He summarizes four of the things from the Pro PHP Security book from Apress (by Chris Snyder and Michael Southwell) that can leave holes in you application for would-be explots - preg_replace, shell_exec/exec, eval (which we all know is only one letter from "evil" anyway) and require/include.