3v4l.org

run code in 500+ PHP versions simultaneously
<?php function isn’tInvalid() { return true; } var_dump(isn’tInvalid());
Output for 8.2.31 - 8.2.33, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
bool(true)
preferences:
66.48 ms | 780 KiB | 4 Q