3v4l.org

run code in 500+ PHP versions simultaneously
<?php for($i=0, $j=0; $i + $j <6; $i++, $j++){ echo "\$i => {$i}, \$j => {$j}" . PHP_EOL; }
Output for 8.1.23 - 8.1.34, 8.2.1 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
$i => 0, $j => 0 $i => 1, $j => 1 $i => 2, $j => 2
preferences:
95.99 ms | 898 KiB | 4 Q