Sorting an Associative Array by Value

[kbc1]

Hi all

Need a bit of help.

I have an array structured as such:

Array (
		[uniquestringvalue1] => Array (
            						[price] => 12.99
            						[image] => nc0iicjxmq.gif
								  )
		[uniquestringvalue2] => Array (
            						[price] => 8.99
            						[image] => v40ii67jxmq.gif
								  )
		[uniquestringvalue3] => Array (
            						[price] => 24.99
            						[image] => grujkiohff.gif
								  )
		[uniquestringvalue4] => Array (
            						[price] => 8.99
            						[image] => hdndh657hd.gif
								  )
)

What i need to do is to sort the array in order of the [price] value (low to high). It doesn't matter if the key is reset (if that helps at all).

I have looked around on sorting arrays but nothing really has helped to date.

Any advice would be greatly appreciated.

kbc

[paulnaj]

You can use the usort function ...

<?php
// Used by usort
function cmp_price($a, $b)
{
    if ($a['price'] == $b['price']) {
        return strcmp($a['image'], $b['image']);
    }
    return ($a['price'] < $b['price']) ? -1 : 1;
}

$a = array(
	'uniquestringvalue1' => array('price' => 12.99, 'image' => 'nc0iicjxmq.gif')
,	'uniquestringvalue2' => array('price' => 8.99, 'image' => 'v40ii67jxmq.gif')
,	'uniquestringvalue3' => array('price' => 24.99, 'image' => 'grujkiohff.gif')
,	'uniquestringvalue4' => array('price' => 8.99, 'image' => 'hdndh657hd.gif')
);

usort($a, "cmp_price");
echo '<pre>'; var_dump($a); echo '</pre>';
?>