After search­ing the inter­net for some­thing trivial like the sort­ing a mul­ti­di­men­sional array I found the fol­low­ing solution.

function sort_multi_array(&$array, $key)
{
foreach($array as &$value) {
$value['__________'] = $value[$key];
}
/* Note, if your functions are inside of a class, use:
usort($array, array("My_Class", 'sort_by_dummy_key'));
*/

usort($array, 'sort_by_dummy_key');

foreach($array as &$value) {   // removes the dummy key from your array
unset($value['__________']);
}
return $array;
}

function sort_by_dummy_key($a, $b)
{
if($a['__________'] == $b['__________']) return 0;
if($a['__________'] < $b['__________']) return -1;
return 1;
}

Looks a little bit weird but it gives the simple abil­ity to just pass in the array and the key you want your array sor­ted by.

So for an array like this:

$dimension_array = array( array("source"=>"google.com/images", "dimensions"=>156000), array("source"=>"bing.com/images", "dimensions"=>12000), array("source"=>"flickr.com/images", "dimensions"=>160000));

You would make one simple call and if you want the res­ult in reverse order you simple reverse the array and you’re done.

$sorted = sort_multi_array($dimension_array, "dimensions");

// If you want your sorted array in reverse order
$final_image_array = array_reverse( $sorted );

As I men­tioned the “sort_multi_array” looks a little weird but it is quite simple. What it does is, it takes your passed $key para­meter and assigns it to a value with a dummy key. Now we can just use the easy “usort” func­tion to com­pare the “keys” and finally we remove the “dummy_key. Done.

I found this code here.

If you have ques­tions leave me a comment.