Changing the position of items in an array

[foxroberts]

Hi.

As the title tells you, I want to change the position of items
in an array. Do you know a good way to do this?

I list all items on a page which looks like this:

item1 + -
item2 + -
item3 + -

You should click on the + to move the item one position
to the top, and the - is for a lower position in the array.

Do I really have to do it like this?
"run through the array, find the position of my item, delete it, run
a second time trough the array and put it in the new position"
or is there an array function I missed?

Thank you for any hints!

Fox

[Weedpacket]

Swap it with its neighbour. I'm assuming your array is numerically indexed (otherwise "order" is ambiguous):

to move $item[$foo] up one place:

$t = $item[$foo];
$item[$foo] = $item[$foo+1];
$item[$foo+1] = $t;

And I'm sure you can work out how to move it down.

The only trickiness is if it's already at the end and they try and be silly and move it beyond the end - but that's easy enough to check (you can't move $item[0] up, for example).

[foxroberts]

Thank you for that idea.
I did it the following way (if that helps somebody in the future):

	$pos = array_search($myitem, $allitems);

if ($move == 'up')
	$newpos = $pos-1;
if ($move == 'down')
	$newpos = $pos+1;

if ($newpos >= 0 && $newpos < count($allitems))
{
	$t = $allitems[$pos];
	$allitems[$pos] = $allitems[$newpos];
	$allitems[$newpos] = $t;
}

If you know a simpler way, please tell me. Thank you!