Ds\Map::sum

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Ds\Map::sumReturns the sum of all values in the map

说明

public Ds\Map::sum(): int|float

Returns the sum of all values in the map.

注意:

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 map as either a float or int depending on the values in the map.

示例

示例 #1 Ds\Map::sum() integer example

<?php
$map
= new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
var_dump($map->sum());
?>

以上示例的输出类似于:

int(6)

示例 #2 Ds\Map::sum() float example

<?php
$map
= new \Ds\Map(["a" => 1, "b" => 2.5, "c" => 3]);
var_dump($map->sum());
?>

以上示例的输出类似于:

float(6.5)
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