colindecarlo · February 13, 2016 17:20
diff --git a/fifth-hole.php b/fifth-hole.php
 <?php

 function transpose($matrix) {
    return array_reduce(array_keys($matrix[0]), function ($transposed, $column) use ($matrix) {
        $transposed[] = array_column($matrix, $column);
        return $transposed;
    }, []);
 }
	<?php

	function transpose($matrix) {
	return array_reduce(array_keys($matrix[0]), function ($transposed, $column) use ($matrix) {
	$transposed[] = array_column($matrix, $column);
	return $transposed;
	}, []);
	}