3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Post { public function save() { $this->custom_updates(); } protected function custom_updates() { echo 'PARENT'; } } class Event extends Post { protected function custom_updates() { echo 'CHILD'; } } $Event = new Event(); $Event->save();
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
CHILD

preferences:
57.75 ms | 1634 KiB | 4 Q