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PHP Ds\Set sum() Function
  • Last Updated : 16 Aug, 2019

The Ds\Set::sum() function of Ds\Set class in PHP is an inbuilt function which is used to find the sum of all of the elements present in a Set.

Syntax:

number public Ds\Set::sum ( void ) 

Parameter: This function does not accepts any parameter.

Return Value: This function returns the sum of the values present in a Set. The return type of the function can be integer or float depending on the type of values present in the Set instance.

Below programs illustrate the Ds\Set::sum() function:



Program 1:

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<?php 
  
// Declare an empty set 
$set = new \Ds\Set([1, 2, 3, 4, 5]);
  
// Print the sum of all values
echo("Sum of all values is: "); 
print_r($set->sum()); 
  
?> 

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Output:

Sum of all values is: 15

Program 2:

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<?php 
  
// Declare an empty set 
$set = new \Ds\Set([1.1, 2.2, 3.5, 4.9, 5]);
  
// Print the sum of all values
echo("Sum of all values is: "); 
print_r($set->sum()); 
  
?> 

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Output:

Sum of all values is: 16.7

Reference: http://php.net/manual/en/ds-set.sum.php

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