Posted by Toby A Inkster on 10/11/91 12:00

sberry wrote:

> $a = array('big', 'small', 'medium');
> $b = array('old', 'new');
> $c = array('blue', 'green');
>
> I want to take those and end up with all of the combinations they create
> like the following

The previews of Perl6 are delicious in this area.

@a = 'big', 'small', 'medium';
@b = 'old', 'new';
@c = 'blue', 'green';

@combos = @a X,X @b X,X @c;

And there, @combos is a list of arrays, with each of the arrays being
something like ('big', 'new', 'blue'). It's got really great functions for
operating on whole data structures in one fell swoop.

Back to the real world of PHP 5 though. The easiest way is to use a
handful of well-placed foreach loops:

$a = array('big', 'small', 'medium');
$b = array('old', 'new');
$c = array('blue', 'green');
$combos = array();

foreach ($a as $x) foreach ($b as $y) foreach ($c as $z)
{
$combos[] = array($x, $y, $z);
}

print_r($combos);


--
Toby A Inkster BSc (Hons) ARCS
[Geek of HTML/SQL/Perl/PHP/Python/Apache/Linux]
[OS: Linux 2.6.17.14-mm-desktop-9mdvsmp, up 17 days, 5:00.]

Gnocchi all'Amatriciana al Forno
http://tobyinkster.co.uk/blog/2008/01/15/gnocchi-allamatriciana/

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