I'd avoid PHP (because there's so many that start from scratch with PHP and make a bad name for themselves and the language). Python and Flask are a good place to start and Python is a "respected" language. So without experience and PHP on a resume puts you'll be lumped in the same group as all the awful programmers that think PHP is bees-knees (Even if you're not awful).
Plus, there's this. http://me.veekun.com/blog/2012/04/09/php-a-fractal-of-bad-de...