If you're using OSX you can open Terminal by typing:

cmd + space bar

or just going to Applications -> Utilities and clicking on the Terminal icon.

On the command line in Terminal type:

php -v

The -v flag means version. This will show you which version of PHP you are using. For more options to the php command you can type man php.

John John (304)

In this guide I'm going to describe how to get started with PHP and MySQL.