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Ds\Deque::sum

(PECL ds >= 1.0.0)

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

说明

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.

参数

此函数没有参数。

返回值

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

范例

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

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

以上例程的输出类似于:

int(6)

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

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

以上例程的输出类似于:

float(6.5)
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