php array sorted by key

How to sort php array by key

ksort() - Sort the array in ascending order according to the key of the associated array

krsort() - Sort the array in descending order based on the key of the associative array

ksort() - Sort the array in ascending order based on the key of the array

Below Example of Sort an associative array in ascending order based on the array's key:

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

Output:

Array ( [Ben] => 37 [Joe] => 43 [Peter] => 35 )

krsort() - Sort the array in descending order based on the array's key

The following example sorts the associative array in descending order according to the key of the array:

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

Output:

Array ( [Peter] => 35 [Joe] => 43 [Ben] => 37 )

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