<?php

$data = range(1, 32); # fake data

foreach(array_chunk($data, 5) as $items)
{
    # output per each segment:    
    
    echo '<div>';
    
    foreach($items as $item)
    {
        echo $item , " ";
    }
    
    echo '</div>', "\n";
}

return;

<div>1 2 3 4 5 </div>
<div>6 7 8 9 10 </div>
<div>11 12 13 14 15 </div>
<div>16 17 18 19 20 </div>
<div>21 22 23 24 25 </div>
<div>26 27 28 29 30 </div>
<div>31 32 </div>