Ds\Deque::sum

(PECL ds >= 1.0.0)

Ds\Deque::sum — Returns the sum of all values in the deque

public function Ds\Deque::sum(): int|float

Returns the sum of all values in the deque.

Note:
Arrays and objects are considered equal to zero when calculating the sum.

This function has no parameters.

The sum of all the values in the deque as either a float or int depending on the values in the deque.

Example #1 Ds\Deque::sum() integer example

<?php
$deque = new \Ds\Deque([1, 2, 3]);
var_dump($deque->sum());
?>

The above example will output something similar to:

int(6)

Example #2 Ds\Deque::sum() float example

<?php
$deque = new \Ds\Deque([1, 2.5, 3]);
var_dump($deque->sum());
?>

The above example will output something similar to:

float(6.5)