PHP - Ds Map sum() Function

Ds\Map::sum() function can return the sum of all values in a map.

Syntax

public number Ds\Map::sum( void )

Ds\Map::sum() function doesn't have any parameters.

Ds\Map::sum() function can return the sum of all values in a map as either float or int depending on values in a map.

Example 1

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

Example 2

<?php 
   $map = new \Ds\Map([1 => 10.5, 2 => 20.0, 3 => 30.5]); 
   print_r($map->sum());   
?>