UtilPHP (Aka util.php) is a collection of useful functions and snippets that you need or could use every day. It’s implemented as a class with static methods, to avoid conflicts with your existing code-base. Just drop it in and start using it immediately.
Included are 40-odd functions that provide you with the ability to do common tasks much easier and more efficiently, without having to find that one comment on php.net where you know it’s been done already. Access superglobals without checking to see if certain indexes are set first and pass default values, use a nicely formatted var dump, validate emails, generate random strings, flatten an array, pull a single column out of a multidimensional array and much more.
Although it’s implemented as one giant class, util.php has extensive documentation and a full suite of unit tests to avoid breaking backwards-compatibility unintentionally.