3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a () { } unserialize ( serialize ( new ArrayIterator ) ) [ array () ] -> b = a () ;
based on g8o3L
Output for 8.0.0
Fatal error: Uncaught TypeError: Illegal offset type in /in/PlFZO:3 Stack trace: #0 {main} thrown in /in/PlFZO on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.23, 7.4.0 - 7.4.12
Warning: Illegal offset type in /in/PlFZO on line 3