3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { function test() { echo 'foo test'; } } class Bar { function test() { echo 'bar test'; } } $foo = new Foo(); $foo = change_class($foo, 'Bar'); $foo->test(); function change_class($object, $new_class) { preg_match('~^O:[0-9]+:"[^"]+":(.+)$~', serialize($object), $matches); return unserialize(sprintf('O:%s:"%s":%s', strlen($new_class), $new_class, $matches[1])); }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
bar test
preferences:
253.94 ms | 406 KiB | 427 Q