将foreach循环的输出存储到变量中 [英] Storing the output of foreach loop into a variable

问题描述

我有一个foreach循环，它将回显用户从复选框中所做的所有选择.

I have a foreach loop that will echo out all the selection made by the user from the checkboxes.

我试图将值存储到名为 $ getCentralArea 的变量中.但是，当我回显 $ getCentralArea 时，它会显示 4 -仅选中复选框的最后一个值.我应该获得的正确值是 1,2,3,4 .

I am trying to store the value into a variable called $getCentralArea. However, when I echo $getCentralArea it shows 4 - only the last value of the selected checked box. The correct value that I should get is 1,2,3,4.

if(!empty($_POST['centralArea'])) 
{
    foreach($_POST['centralArea'] as $centralArea) 
    {
        $getCentralValue = $centralArea.","; //Output will be in the following format 1,2,3,4
    }
}else{ $getCentralArea="";}

推荐答案

您可以连接起来，但是留下一个逗号.另外，无需循环，只需 implode()数组:

You could concatenate but that leaves a trailing comma. Also, no need to loop, just implode() the array:

$getCentralValue = implode(',', $_POST['centralArea']);

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