Description
void
uksort ( array array, callback cmp_function)
This function will sort the keys of an array using a
user-supplied comparison function. If the array you wish to sort
needs to be sorted by some non-trivial criteria, you should use
this function.
Example 1. uksort() example function cmp ($a, $b) {
if ($a == $b) return 0;
return ($a > $b) ? -1 : 1;
}
$a = array (4 => "four", 3 => "three", 20 => "twenty", 10 => "ten");
uksort ($a, "cmp");
while (list ($key, $value) = each ($a)) {
echo "$key: $value\n";
} |
|
This example would display:
20: twenty
10: ten
4: four
3: three |
See also usort(), uasort(),
sort(), asort(),
arsort(), ksort(),
natsort(), and rsort().
