3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(2**53); var_dump(2**53 + 1); var_dump(2**53 == 2**53 + 1);
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
int(9007199254740992) int(9007199254740993) bool(false)
preferences:
56.71 ms | 406 KiB | 5 Q