3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = 0; $k = 0; while ($i <= 100) { if ($i % 10 === 0 && $i > 0) { $k++; echo '$i = '. $i.' $k = '. $k . PHP_EOL; } $i++; }
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
$i = 10 $k = 1 $i = 20 $k = 2 $i = 30 $k = 3 $i = 40 $k = 4 $i = 50 $k = 5 $i = 60 $k = 6 $i = 70 $k = 7 $i = 80 $k = 8 $i = 90 $k = 9 $i = 100 $k = 10
preferences:
146.3 ms | 408 KiB | 5 Q