3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo PHP_INT_MAX . "\n"; var_dump((double)\PHP_INT_MAX === (double)(\PHP_INT_MAX - 1));
Output for 8.0.1 - 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
9223372036854775807 bool(true)
preferences:
92.65 ms | 406 KiB | 5 Q