3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = $b = true; $a++; $b += 1; echo $a, $b;
Output for 8.3.0 - 8.3.4
Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/chNP7 on line 2 12
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 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 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.27, 8.2.0 - 8.2.17
12

preferences:
244.71 ms | 409 KiB | 357 Q