PHP | DsSequence sum() Function

PHP | Ds\Deque sum() Function

Last Updated : 14 Aug, 2019

The Ds\Deque::sum() function is an inbuilt function in PHP which is used to return the sum of all elements present in the Deque. Syntax:

public Ds\Deque::sum( void ) : number

Parameters: This function does not accept any parameter. Return Value: This function returns the sum of all Deque elements. Below programs illustrate the Ds\Deque::sum() function in PHP: Program 1:

PHP

<?php

// Declare a deque
$deck = new \Ds\Deque([5, 6, 3, 2, 7, 1]);

echo("Elements of Deque\n");

// Display the Deque elements
print_r($deck);

echo("Sum of all Deque elements: ");

// Use sum() function to add all
// Deque elements
var_dump($deck->sum());

?>

Output:

Elements of Deque
Ds\Deque Object
(
    [0] => 5
    [1] => 6
    [2] => 3
    [3] => 2
    [4] => 7
    [5] => 1
)
Sum of all Deque elements: int(24)

Program 2:

PHP

<?php

// Declare a deque
$deck = new \Ds\Deque([1.5, 6.3, 2.3, 7.2, 4.7, 9.3]);

echo("Elements of Deque\n");

// Display the Deque elements
print_r($deck);

echo("Sum of all Deque elements: ");

// Use sum() function to add all
// Deque elements
var_dump($deck->sum());

?>

Output:

Elements of Deque
Ds\Deque Object
(
    [0] => 1.5
    [1] => 6.3
    [2] => 2.3
    [3] => 7.2
    [4] => 4.7
    [5] => 9.3
)
Sum of all Deque elements: float(31.3)

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

PHP | DsSequence sum() Function

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