3v4l.org

run code in 300+ PHP versions simultaneously
<?php $zmienna = 4; do { echo $zmienna; $zmienna++; echo $zmienna; } while ($zmienna < 5);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
45
preferences:
164.35 ms | 404 KiB | 224 Q