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PHP Manual :: require_once



include || include_once || Control Structures || PHP Manual

(PHP 4, PHP 5, PHP 7)

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.

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



include || include_once || Control Structures || PHP Manual
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