Deque
PHP Manual

Ds\Deque::sum

(PECL ds >= 1.0.0)

Ds\Deque::sumReturns the sum of all values in the deque

Description

public number Ds\Deque::sum ( void )

Returns the sum of all values in the deque.

Note:

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

Parameters

This function has no parameters.

Return Values

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

Examples

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

<?php
$deque 
= new \Ds\Deque([123]);
var_dump($deque->sum());
?>

The above example will output something similar to:

int(6)

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

<?php
$deque 
= new \Ds\Deque([12.53]);
var_dump($deque->sum());
?>

The above example will output something similar to:

float(6.5)

Deque
PHP Manual