3v4l.org

run code in 300+ PHP versions simultaneously
<?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);
Output for 5.6.38, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Array ( [0] => Array ( [0] => world [1] => is [2] => a [3] => wonderfull ) [1] => Array ( [0] => in [1] => our ) )
preferences:
47.4 ms | 408 KiB | 5 Q