Anybody have a certain version of PHP or newer you try to code to (for widest ease of installation w/o upgrading PHP)? I think PHP 4.0.6 is probably the most common, but a lot of my code works on 4.0.4.
4.1. If it were't free then I may think about coding something older but because everyone can upgrade for free, everyone that wants to use your product should just upgrade if necessary.