3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace A { $a = 1; } namespace B { $b = 2; } namespace { echo $a . PHP_EOL; echo $b . PHP_EOL; }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
1 2
preferences:
126.47 ms | 402 KiB | 123 Q