VietMX Staff asked 4 years ago
The require_once() statement is identical to require() except PHP will check if the file has already been included, and if so, not include (require) it again.
My suggestion is to just use require_once 99.9% of the time.
Using require or include instead implies that your code is not reusable elsewhere, i.e. that the scripts you’re pulling in actually execute code instead of making available a class or some function libraries.
