3v4l.org

run code in 300+ PHP versions simultaneously
<?php $max = ((~0) ^ (1 << 63)); // for versions before PHP_INT_MAX; var_dump(range($max, ((float) $max) + 0.1));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> float(9.223372036854776E+18) }
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(1) { [0]=> float(9.2233720368548E+18) }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
array(2) { [0]=> int(-1) [1]=> int(0) }

preferences:
287.13 ms | 402 KiB | 459 Q