function evenfirst($i, $j)
{
$value = 0;
if($i % 2)$value++;
if($j % 2)$value--;
if($value == 0)
$value = $i < $j;
return $value;
}
$clothes = array( 'hats' => 75, 'coats' => 32, 'shoes' => 102,
'gloves' => 15, 'shirts' => 51, 'trousers' => 44);
usort($clothes, 'evenfirst');
var_export($clothes);
?>