PHP | Ds\Vector sum() Function

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The Ds\Vector::sum() function is an inbuilt function in PHP which returns the sum of all the elements of the vector.

Syntax:

number public Ds\Vector::sum( void )

Parameters: This function does not accept any parameter.

Return Value: This function returns the sum of all elements in the vector. The sum can be of int or float type depending on the vector elements.

Below programs illustrate the Ds\Vector::sum() function in PHP:

Program 1:

<?php 
  
// Declare the new Vector 
$arr = new \Ds\Vector([3, 6, 1, 2, 9, 7]); 
  
echo("Original vector:\n"); 
  
// Display the vector elements 
var_dump($arr); 
  
echo("\nSum of elements:\n"); 
  
// Use sum() function to returns the  
// sum of all vector elements 
var_dump($arr->sum()); 
  
?> 

Output:

Original vector:
object(Ds\Vector)#1 (6) {
  [0]=>
  int(3)
  [1]=>
  int(6)
  [2]=>
  int(1)
  [3]=>
  int(2)
  [4]=>
  int(9)
  [5]=>
  int(7)
}

Sum of elements:
int(28)

Program 2:

<?php 
  
// Declare the new Vector 
$arr = new \Ds\Vector([3.5, 6, 1, 2.7, 9, 7.3]); 
  
echo("Original vector:\n"); 
  
// Display the vector elements 
print_r($arr); 
  
echo("\nSum of elements: "); 
  
// Use sum() function to returns the  
// sum of all vector elements 
print_r($arr->sum()); 
  
?> 

Output:

Original vector:
Ds\Vector Object
(
    [0] => 3.5
    [1] => 6
    [2] => 1
    [3] => 2.7
    [4] => 9
    [5] => 7.3
)

Sum of elements: 29.5

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

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