Smarty

You can use [url=http://www.phpinsider.com/smarty-forum/viewtopic.php?t=11686]this plugin if you want to make a simple or complex menu. It should be compatible with further smarty versions. I came up ...

Ok,

<table><tr>
{section loop=$big_array name=id}
<td>{$big_array[id]}</td>
{if $smarty.section.id.iteration % $parts == 0}
...

This is a quite powerful plugin if you want to use multidimensional arrays in smarty.
I coded it for menu structures, but you can use it for a lot more.

You can save the following code into your s ...

That still would be
{assign var=parts value=3}
{math equation="ceil(values / parts)" assign=part_items values=$array|@count parts=$parts}

{section name= ...

If you want to add something after an amount of array entries, e.g. an image or #top-link or </td><td> etc., you can use the following code.
$part can easily be loaded from settings or gi ...