PHP 8.1.0 Alpha 1 available for testing


(PHP 5 >= 5.2.0, PHP 7, PHP 8)

ReflectionFunctionAbstract::isInternalChecks if is internal


public ReflectionFunctionAbstract::isInternal ( ) : bool

Checks whether the function is internal, as opposed to user-defined.


This function is currently not documented; only its argument list is available.


This function has no parameters.

Return Values

true if it's internal, otherwise false

See Also

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