Quote Originally Posted by Terr
First, if you learn it, learn PHP-5. Wave of the present/very-near-future, and with enough differences from PHP-4 that when I say five I mean five.
I disagree - very few webhosts (at least the ones I've come across) are ready to support PHP5, most open source PHP scripts are still written in PHP4 (last time I checked, some of them wouldn't even run under PHP5 unless certain options were set in php.ini) and most sample code out there is too. If you're ever going to need to use other people's code, you'd do well to start with PHP4, as PHP5 is not really the "wave" of the present or near future.