5 PHP 5 features you can't afford to ignore

There are dozens of reasons to switch to PHP 5—not least the fact that, if you're still stuck on PHP 4, the PHP team is about to pull the rug from under your feet. Despite the fact that you may not have a choice in the matter, upgrading comes with a number of bonus new features that can help you write better code and gain access to new functionality that required a fair amount of hacking in previous version. Here's a quick list of 5 personal favourites.