Description
void uksort (array array, function 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"; } |
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This example would display:
See also: usort(), uasort(), sort(), asort(), arsort(), ksort(), natsort() and rsort().
