--TEST-- Reflection::getClosureThis() --SKIPIF-- <?php if (!extension_loaded('reflection') || !defined('PHP_VERSION_ID') || PHP_VERSION_ID < 50300) { print 'skip'; } ?> --FILE-- <?php $closure = function($param) { return "this is a closure"; }; $rf = new ReflectionFunction($closure); var_dump($rf->getClosureThis()); echo "Done!\n"; --EXPECTF-- NULL Done!