3v4l.org

run code in 300+ PHP versions simultaneously
<?php $list = array(1,2,3,4,5,6); $length = count($list); $columns = 2; for($column = 0; $column < $columns; $column++) { for($i = $column; $i < $length; $i=$i+$columns) { echo $list[$i]; } echo ' | '; }
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, 5.5.24 - 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
135 | 246 |
preferences:
232.19 ms | 406 KiB | 354 Q