3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ['b', 'e', 'd', 's'], ['l', 'n'] ]; $result = []; foreach ($array as $i => $row) { foreach ($row as $k => $v) { $result[$k][$i] = $v; } } var_export(array_merge(...$result));
Output for 7.4.0 - 7.4.33, 8.0.1 - 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
array ( 0 => 'b', 1 => 'l', 2 => 'e', 3 => 'n', 4 => 'd', 5 => 's', )

preferences:
125.79 ms | 407 KiB | 5 Q