Online PHP editor | refs for NXgKI

<?php // Everything you enter here will be executed by our servers. Try it! $data = array( array('a', 'b', 'c', 'd', 'e'), array('f', 'g', 'h', 'i', 'j'), array('k', 'l', 'm', 'n', 'o'), array('p', 'q', 'r') ); echo "<pre>"; print_r(array_chunk($data,4,true)); die(); $width = count($data[0]); // 5 $height = count($data); // 4 $total = $width * $height; // 20 $new_data = array(); for($i = 0; $i < $total; $i++) { $old_x = floor($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);