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GetFileName

hphp/hack/manual/apis/Classes/ReflectionClass/getFileName.md

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:::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/reflectionclass.getfilename.php )

Hack
public function getFileName(): mixed;

Gets the filename of the file in which the class has been defined.

Returns

  • mixed - Returns the filename of the file in which the class has been defined. If the class is defined in the PHP core or in a PHP extension, FALSE is returned.
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