duanbo2048 2011-10-17 23:22
浏览 91
已采纳

如何获得数组成员的总和?

This is an PHP array:

array
  'ItemId' => 
    array
      0 => string '32' (length=2)
      1 => string '33' (length=2)
      2 => string '35' (length=2)
  'ItemQty' => 
    array
      0 => string '2' (length=1)
      1 => string '1' (length=1)
      2 => string '1' (length=1)

What I like to achieve is to count the numbers in the strings in ItemQty

So here the outcome would be 4.

I tried to use a foreach loop but the outcome is always 3 not 4 (logical I think, but cant solve it)

The array above is a small version of a var_dump of POST values. Its for form validation.

$count_total = 0;

foreach ($jcart->get_contents() as $item) {     

            ++$count_total;

}

What is also seems to make complicated is that $jcart->get_contents() is not just an normal array. At least I don't now how to apply it to the solutions beneath.

var_dump($jcart); gives an object in which the total is already stored as well

private 'itemCount' => int 4

  • 写回答

4条回答 默认 最新

  • douxunzui1519 2011-10-17 23:27
    关注

    Use array_sum().

    $sum = array_sum($arr['ItemQty']);
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(3条)

报告相同问题?

悬赏问题

  • ¥15 我这模型写的不对吗?为什么lingo解出来的下面影子价格这一溜少一个变量
  • ¥50 树莓派安卓APK系统签名
  • ¥15 maple软件,用solve求反函数出现rootof,怎么办?
  • ¥65 汇编语言除法溢出问题
  • ¥15 Visual Studio问题
  • ¥20 求一个html代码,有偿
  • ¥100 关于使用MATLAB中copularnd函数的问题
  • ¥20 在虚拟机的pycharm上
  • ¥15 jupyterthemes 设置完毕后没有效果
  • ¥15 matlab图像高斯低通滤波