- array_map: documentation ( source)
- array_chunk: documentation ( source)
- array_merge: documentation ( source)
- var_export: documentation ( source)
<?php
$matrix = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
[10, 11, 12],
];
var_export(
array_map(
null,
...array_chunk(
array_merge(...$matrix),
count($matrix)
)
)
);