[pmwiki-devel] array transform question

[Hans]

How do I transform or create a new array out of an existing array,
in the following way: ($p to $new)

$p = array($p[0],$p[1],$p2],$p[3],$p[4],.....,$p[$n]);
$ppp = 3; (for instance)
$n = 7 for instance
$new = array($p[0], $p[1].$p[2].$p[3], $p[4].$p[5].$p[6], $p[7]);

so the new array combines groups of elements, starting with $p[1], in
groups of $ppp elements.

I am handling posts on a page and creating subpage groupings of posts,
according to a PostsPerPage var $ppp.

 Hans