php php中的foreach复选框POST
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foreach checkbox POST in php
提问by Curtis Crewe
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.
基本上我的问题如下，如何在 PHP 中执行 $_POST 请求时选择“已检查”复选框，目前我有复选框正在执行如下所示的数组。
<input type="checkbox" value="1" name="checkbox[]">
<input type="checkbox" value="2" name="checkbox[]">
<input type="checkbox" value="2" name="checkbox[]">
<input type="checkbox" value="3" name="checkbox[]">
I want to be able to do something like this
我希望能够做这样的事情
foreach(CHECKED CHECKBOX as CHECKBOX) {
echo CHECKBOX VALUE;
}
I've tried doing similar to that and it's not echoing anything.
我试过做类似的事情，但它没有回应任何东西。
回答by ThiefMaster
foreach($_POST['checkbox'] as $value) {
}
Note that $_POST['checkbox']will onlyexist if at least one checkbox is checked. So you mustadd an isset($_POST['checkbox'])check before that loop. The easiest way would be like this:
请注意，只有在至少选中一个复选框$_POST['checkbox']时才会存在。因此，您必须isset($_POST['checkbox'])在该循环之前添加检查。最简单的方法是这样的：
$checkboxes = isset($_POST['checkbox']) ? $_POST['checkbox'] : array();
foreach($checkboxes as $value) {
// here you can use $value
}
回答by Timur
This type of questions can be easily understood printing $_POST: var_dump($_POST);. You'll see that PHP receive values of checked checkboxes in numeric array.
这种类型的问题可以很容易理解打印$_POST：var_dump($_POST);。您将看到 PHP 接收数值数组中选中复选框的值。
foreach ( $_POST['checkbox'] as $value ) {
echo $value;
}
