PHP ksort() Function

Definition and Usage

The ksort() function sorts an associative array in ascending order, according to the key.
Tip: Use the krsort() function to sort an associative array in descending order, according to the key.
Tip: Use the asort() function to sort an associative array in ascending order, according to the value.

Syntax

ksort(array,sortingtype);

Parameter	Description
array	Required. Specifies the array to sort
sortingtype	Optional. Specifies how to compare the array elements/items. Possible values: 0 = SORT_REGULAR - Default. Compare items normally (don't change types) 1 = SORT_NUMERIC - Compare items numerically 2 = SORT_STRING - Compare items as strings 3 = SORT_LOCALE_STRING - Compare items as strings, based on current locale 4 = SORT_NATURAL - Compare items as strings using natural ordering 5 = SORT_FLAG_CASE -

Example

Sort an associative array in ascending order, according to the key:

<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
ksort($age);
?> 

 

OUTPUT :

Key=Ben, Value=37
Key=Joe, Value=43
Key=Peter, Value=35