require_once

(PHP 4, PHP 5, PHP 7, PHP 8)

The require_once expression is identical to require except PHP will check if the file has already been included, and if so, not include (require) it again.

See the include_once documentation for information about the _once behaviour, and how it differs from its non _once siblings.

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top