ReflectionFunctionAbstract::getExtensionName Gets extension name &reftitle.description; public stringfalseReflectionFunctionAbstract::getExtensionName Get the extensions name. &reftitle.parameters; &no.function.parameters; &reftitle.returnvalues; The name of the extension which defined the function, or &false; for user-defined functions. &reftitle.seealso; ReflectionFunctionAbstract::getExtension