PHP uksort()Functions
Examples
Sort the elements of array $arr by key name using a user-defined comparison function:
<?php
function my_sort($a,$b)
{
if ($a==$b) return 0;
return ($a<$b)?-1:1;
}
$arr=array("a"=>4,"b"=>2,"c"=>8,d=>"6");
uksort($arr,"my_sort");
?>
function my_sort($a,$b)
{
if ($a==$b) return 0;
return ($a<$b)?-1:1;
}
$arr=array("a"=>4,"b"=>2,"c"=>8,d=>"6");
uksort($arr,"my_sort");
?>
Run Example »
Definition and Usage
The uksort() function sorts an array by key names using a user-defined comparison function.
Tip:Please use theuasort()function to sort the array by key values, which uses a user-defined comparison function for sorting.
Syntax
uksort(array,myfunction);
| Parameter | Description |
|---|---|
| array | Required. Specifies the array to sort. |
| myfunction | Optional. A string that defines a callable comparison function. If the first argument is <, =, > the second argument, the comparison function must return an integer <, =, > 0 respectively. |
Technical Details
| Return value: | Returns TRUE on success, or FALSE on failure. |
|---|---|
| PHP Version: | 4+ |
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