PHP ksort() Function

Definition and Usage

The ksort() function sorts an array by the keys. The values keep their original keys.

This function returns TRUE on success, or FALSE on failure.

ksort(array,sorttype)

Parameter	Description
array	Required. Specifies the array to sort
sorttype	Optional. Specifies how to sort the array values. Possible values: SORT_REGULAR - Default. Treat values as they are (don't change types) SORT_NUMERIC - Treat values numerically SORT_STRING - Treat values as strings SORT_LOCALE_STRING - Treat values as strings, based on local settings

<?php
$my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse");

ksort($my_array);
print_r($my_array);
?>

The output of the code above will be:

Array
(
[a] => Dog
[b] => Cat
[c] => Horse
)

Complete PHP Array Reference