There is a new column from the folks over at PHP Magazine for your enjoyment:

The Inaugural edition of Guru Speak, a new column in the International PHP Magazine (Print Ed), is available online. Forthcoming Issues of our magazine will feature Chris Shiflett's Guru Speak will focus on varying topics, but one recurring topic that he will focus on is that of providing thorough answers to frequently asked questions. As one of the most active contributors to the PHP-General mailing list for the last few years, Chris is perfectly placed to provide you with detailed answers to questions that intrigue PHP developers the most. If you'd like a specific topic to be covered in our upcoming Issues, feel free to drop a note to ibritto[AT]php[HYPHEN]mag[DOT]net.

This initial edition talks about how to avoid the dreaded "Page Has Expired" warnings on your site. Thankfully, the solution is quite simple - but you'll have to read the article to find out what it is...