PHP: How to remove non-printable characters from strings

PHP FAQ: How do I remove all non-printable characters from a string in PHP?

I don’t know of any built-in PHP functions to remove all non-printable characters from a string, so the solution is to use the preg_replace function with an appropriate regular expression.

A simple, printable calendar

If you've ever wanted a simple, printable calendar you can print and then put up on your refrigerator, I just created one over on the Valley Programming website. Here's a link to my simple printable calendar blog post over there. And fwiw, here's an image to give you a little idea of what the calendar looks like: