Online PHP editor | refs for Yl9rp

<?php $arr = Array ( 0 => 'world', 1 => 'is', 2 => 'a', 3 => 'wonderfull', 5 => 'in', 6 => 'our' ); $new_array = []; $old_key = -1; $i = 0; foreach($arr as $key=>$val){ if(($key-$old_key) ==1){ $new_array[$i][] = $val; $old_key = $key; } if(($key-$old_key) >1){ $i++; $new_array[$i][] = $val; $old_key = $key; } } print_r($new_array);