[RESOLVED] sort multidimensional array

[mark_kccs]

Hi all

Please can someone advise on how to achieve this. I need to sort the array and maintain the key indexes. The array is as:

$cart[0]['DRY']='item 1';
$cart[1]['FPA']='item 2';
$cart[2]['DRY']='item 3';
$cart[3]['FPA']='item 4';
$cart[4]['FPA']='item 5';
$cart[5]['CMP']='item 6';
$cart[6]['DRY']='item 7';

and i need to get this;

$cart[5]['CMP']='item 6';
$cart[0]['DRY']='item 1';
$cart[2]['DRY']='item 3';
$cart[6]['DRY']='item 7';
$cart[1]['FPA']='item 2';
$cart[3]['FPA']='item 4';
$cart[4]['FPA']='item 5';

Basically, I need to sort on the 2nd array keys alphabetically.

Many thanks

[laserlight]

You could use [man]uasort/man, e.g.,

uasort($cart, create_function('$a,$b', 'return strcmp(key($a), key($b));'));

Note that if you need a stable sort then the comparator function must account for this.

[mark_kccs]

Absolutely brilliant.

Many thanks laserlight.