php中的foreach复选框POST [英] foreach checkbox POST in php

问题描述

基本上我的问题如下，如何在 PHP 中执行 $_POST 请求时选择已选中"复选框，目前我有复选框正在执行如下所示的数组.

Basically my question is the following, how can i select on "Checked" checkbox's while doing a $_POST request in PHP, currently i have the checkbox's doing an array as shown below.

<input type="checkbox" value="1" name="checkbox[]">
<input type="checkbox" value="2" name="checkbox[]">
<input type="checkbox" value="2" name="checkbox[]">
<input type="checkbox" value="3" name="checkbox[]">

我希望能够做这样的事情

I want to be able to do something like this

foreach(CHECKED CHECKBOX as CHECKBOX) {
   echo CHECKBOX VALUE;
}

我试过做类似的事情，但它没有回响任何东西.

I've tried doing similar to that and it's not echoing anything.

推荐答案

foreach($_POST['checkbox'] as $value) {

}

请注意，$_POST['checkbox'] 将仅在至少一个复选框被选中时存在.因此，您必须在该循环之前添加一个 isset($_POST['checkbox']) 检查.最简单的方法是这样的:

Note that $_POST['checkbox'] will only exist if at least one checkbox is checked. So you must add an isset($_POST['checkbox']) check before that loop. The easiest way would be like this:

$checkboxes = isset($_POST['checkbox']) ? $_POST['checkbox'] : array();
foreach($checkboxes as $value) {
    // here you can use $value
}

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