1--TEST--
2ReflectionFunction::getExtension()
3--FILE--
4<?php
5function foo () {}
6
7$function = new ReflectionFunction('sort');
8var_dump($function->getExtension());
9
10$function = new ReflectionFunction('foo');
11var_dump($function->getExtension());
12?>
13--EXPECTF--
14object(ReflectionExtension)#%i (1) {
15  ["name"]=>
16  string(8) "standard"
17}
18NULL
19