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 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
1 2

preferences:
86.71 ms | 406 KiB | 5 Q