ReflectionClass::getExtension	ReflectionClass::getFileName

ReflectionClass	Last updated: Mon, 26 Oct 2026

ReflectionClass::getExtensionName

(PHP 5, PHP 7, PHP 8)

ReflectionClass::getExtensionName — Gets the name of the extension which defined the class

public function ReflectionClass::getExtensionName(): string|false

Gets the name of the extension which defined the class.

This function has no parameters.

The name of the extension which defined the class, or false for user-defined classes.

Example #1 Basic usage of ReflectionClass::getExtensionName()

<?php
$class = new ReflectionClass('ReflectionClass');
$extension = $class->getExtensionName();
var_dump($extension);
?>

The above example will output:

string(10) "Reflection"