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getExtensionName

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.getextensionname.php )

public function getExtensionName(): string;

Gets the name of the extension which defined the class.

Returns​

  • mixed - The name of the extension which defined the class, or FALSE for user-defined classes.