What is difference between ksort() and usort() functions.

• ksort() function is used to sort an array according to its key values whereas asort() function is used to sort an array according to its values.
• They both used to sort an associative array in PHP.

Example of asort():

<?php
$age = array("Peter"=>"37", "Ben"=>"27", "Joe"=>"43");
asort($age);
?>

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

Example of ksort():

<?php
$age = array("Peter"=>"37", "Ben"=>"27", "Joe"=>"43");
ksort($age);
?>

Output: Key=Ben, Value=37

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