<?php
// Everything you enter here will be executed by our servers. Try it!
$data = array(
array('a', 'b', 'c', 'd', 'e'),
array('f', 'g', 'h', 'i', 'j'),
array('k', 'l', 'm', 'n', 'o'),
array('p', 'q', 'r')
);
$width = count($data[0]); // 5
$height = count($data); // 4
$total = $width * $height; // 20
$new_data = array();
for($i = 0; $i < $total; $i++) {
$old_x = ceil($i / $width); // integer division
$old_y = $i % $width; // modulo
$new_x = $i % $height; // modulo
$new_y = floor($i / $height); // integer division
if (!isset($new_data[$new_x])) {
$new_data[$new_x] = array();
}
if (isset($data[$old_x][$old_y])) {
$new_data[$new_x][$new_y] = $data[$old_x][$old_y];
}
}
print_r($new_data);
preferences:
37.82 ms | 402 KiB | 5 Q