3v4l.org

run code in 300+ PHP versions simultaneously
<?php $days = range(1,31); $i = 3; $j = 2; $str =""; for($k=0;$k<end($days);){ $str .= "<b>" . implode("</b> <b>", array_slice($days, $k,$i)) ."</b> " . implode(" ", array_slice($days, $k+$i, $j)). " "; $k=$k+$i+$j; } echo $str;

preferences:
36.99 ms | 402 KiB | 5 Q