3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo extends Exception { protected $file = ''; }
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Type of Foo::$file must be string (as in class Exception) in /in/eAZqC on line 3
Process exited with code 255.
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30
preferences:
100.98 ms | 407 KiB | 5 Q