Piecing Together Masterpieces with Included Files Include, Require, Require Once, and Include Once. You might have seen these at the top of a file in someone else’s code, but what does each one of them mean? We’ll take a look at each later. For now, we’re just trying to split our file since it was quite huge last time. https://blog.devgenius.io/php-p54-inheritance-chain-3cb62edcb373 We want to start off slowly and separate each class into its own individual file. Each of those files are then included whenever necessary. For the most part, each of these keywords do the same function, which is to include