PHP include, require, require_once


When should I use require vs. include?

The require() function is identical to include(), except that it handles errors differently. If an error occurs, the include() function generates a warning, but the script will continue execution. The require() generates a fatal error, and the script will stop.

-> – PHP Includes


When should I use require_once vs. require?

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.

-> – Require Once