ReflectionFunction

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

( excerpt from http://php.net/manual/en/class.reflectionfunction.php )

The ReflectionFunction class reports information about a function.

Interface Synopsis

class ReflectionFunction extends ReflectionFunctionAbstract implements Reflector {...}

Public Methods

• ::export($name, $return = false)
  ( excerpt from http://php.net/manual/en/reflectionfunction.export.php )

• ->__construct($name_or_closure)
  ( excerpt from http://php.net/manual/en/reflectionfunction.construct.php )

• ->__toString(): string
  ( excerpt from http://php.net/manual/en/reflectionfunction.tostring.php )

• ->getAttributeClass<T as HH\FunctionAttribute>(classname<T> $c): ?T

• ->getClosure()

• ->getClosureScopeClass(): ?ReflectionClass

• ->getClosureThis(): mixed
  Returns this pointer bound to closure

• ->getName(): string
  (excerpt from http://php.net/manual/en/reflectionfunctionabstract.getname.php )

• ->invoke(...$args)
  ( excerpt from http://php.net/manual/en/reflectionfunction.invoke.php )

• ->invokeArgs(varray $args)
  ( excerpt from http://php.net/manual/en/reflectionfunction.invokeargs.php )

• ->isClosure(): bool

• ->isDisabled(): bool
  ( excerpt from http://php.net/manual/en/reflectionfunction.isdisabled.php )