PHP - Function uksort()
Syntax
uksort ( $array, $cmp_function )
Definition and Usage
The uksort() function sorts an array by the element keys using user defined comparison function.
Parameters
| Sr.No | Parameter & Description |
|---|---|
| 1 |
array(Required) It specifies an array. |
| 2 |
cmp_function(Required) Use if defined function to compare values and to sort them. The function must return -1, 0, or 1 for this method to work correctly. It should be written to accept two parameters to compare, and it should work something like this −
|
Return Value
It returns TRUE on success or FALSE on failure.
Example
Try out following example −
<?php
function cmp_function($a, $b) {
if ($a == $b) return 0;
return ($a > $b) ? -1 : 1;
}
$input = array("d"=>"lemon", "a"=>"orange", "b"=>"banana" );
uksort($input, "cmp_function");
print_r($input);
?>
This will produce the following result −
Array ( [d] => lemon [b] => banana [a] => orange )
php_function_reference.htm
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