Not exactly a support question, but hopefully someone out there can expose some WP wisdom:
I've recently [today] become familiar with the whole parent/child theme process and am comfortable editing stylistically this way. While I'm OK on the HTML/CSS front, I have no PHP knowledge.
My question: how does everyone/is there a way to back up changes to .php files in the same fashion a child .css overrides the parent .css? I find this method to be simple and secure. The project I am working on is inevitably going to require some minor PHP hacks and I am (at the moment) uncomfortable with performing without the security of reverting to an earlier "save" or "version".
P.S. any suggestions on a good starting point to learning PHP? Is it worth the time? I've started WP 3 weeks ago and am really keen on learning the in's and out's.