1. How do I install, or upgrade my version of PHP on a Mac. What do I need to be able to run and test it locally?
2. If I do run and test locally, will it affect my system if I make mistakes or whatnot?
3. How does it all work?
I've only got experience in coding in HTML and CSS. And the only PHP I do know is php include, so when it comes to anything else, I'm totally lost. It's not so much the scripting that troubles me, it's understanding how it works. I don't want to end up doing something completely stupid that messes up my computer.
Thanks in advance for answering my questions!