如何添加数组中的所有值?

问题描述

我有一个数组(或者它是一个对象?)，看起来像这样:

I have an array (or is it an object?) that looks like this:

Array ( 
    [0] => 5 
    [1] => 4 
    [2] => 3 
    [3] => 4 
    [4] => 4 
    [5] => 4 
    [6] => 4 
    [7] => 3 
    [8] => 4 
    [9] => 5 
    [10] => 3 
    [11] => 4 
    [12] => 4 
    [13] => 4 
    [14] => 3 
    [15] => 4 
    [16] => 4 
    [17] => 5
) 

如何将其中的所有值相加.IE.5 + 4 + 3 等...有什么想法吗?

How do I add up all the values inside it. ie. 5 + 4 + 3 etc... Any ideas?

推荐答案

你拥有的是一个数组，而不是一个对象.

What you have is an array, not an object.

您可以使用循环(如 foreach)遍历数组，然后将所有值添加到变量中.

You can iterate over an array using a loop (like foreach), and then add all the values up to a variable.

$total = 0;
foreach($array as $val) $total += $val;

或者使用核心函数array_sum().

array_sum($array);

小心第二个，因为如果您的数组中有一个 float 值，并且您希望返回一个整数值，则此函数将返回一个 float.

Careful with the second one, because if there is a float value in your array, and you expect an integer value returned, this function will return a float.

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