PHP - Ds Map ksort() Function

Ds\Map::ksort() function can sort the map in-place by key.

Syntax

public void Ds\Map::ksort([ callable $comparator ] )

Ds\Map::ksort() function can sort the map in-place by key using an optional comparator function.

Ds\Map::ksort() function doesn't return any value.

Example 1

<?php  
   $map = new \Ds\Map([1 => 10, 3 => 30, 2 => 20]);  
   $map->ksort();  
   
   print_r($map); 
?> 

Example 2

<?php  
   $map = new \Ds\Map("y" => "Point", "x" => "Tutorials", "z" => "India"]);  
   $map->ksort();  
   
   print_r($map); 
?>