3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Dinosaur; var_dump(E_USER_WARNING, \E_USER_WARNING) ; const E_USER_WARNING = 42; var_dump(E_USER_WARNING, \E_USER_WARNING);
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
int(512) int(512) int(42) int(512)
preferences:
98.96 ms | 408 KiB | 5 Q