使用 php 获取多个复选框名称/id
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getting multiple checkboxes names/id's with php
提问by John
How can i get the names or id's of the multiple selected checkboxes on submit, using the PHP? Following is example form. Thanks.
如何使用 PHP 在提交时获取多个选定复选框的名称或 ID？以下是示例表格。谢谢。
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input type="checkbox" name="orange" id="orange">
<input type="checkbox" name="apple" id="apple">
<input type="checkbox" name="sky" id="sky">
<input type="checkbox" name="sea" id="sea">
<br>
<br>
<input type="submit" name="Submit" value="Submit">
</form>
回答by David Powers
Checkbox values are submitted from a form only if the checkbox is selected. What's more, it's the name attribute that counts, not the ID.
Checkbox values are submitted from a form only if the checkbox is selected. 更重要的是，重要的是名称属性，而不是 ID。
There are several ways of handling checkboxes in PHP:
PHP 中有几种处理复选框的方法：
- Give all checkboxes the same name followed by a pair of square brackets, so the entire set is treated as an array. In this case, give each checkbox a value.
- Give each checkbox a different name and a value.
- Give each checkbox a different name, but no value.
- 为所有复选框指定相同的名称，后跟一对方括号，以便将整个集合视为一个数组。在这种情况下，给每个复选框一个值。
- 为每个复选框指定不同的名称和值。
- 为每个复选框指定不同的名称，但没有值。
In each case, you need to check for the existence of the checkbox name in the $_POST array.
在每种情况下，您都需要检查 $_POST 数组中是否存在复选框名称。
For example:
例如：
<input type="checkbox" name="color[]" id="orange" value="orange">
<input type="checkbox" name="color[]" id="apple" value="apple">
To get the values for these checkboxes:
要获取这些复选框的值：
if (isset($_POST['color'])) {
$colors = $_POST['color'];
// $colors is an array of selected values
}
However, if each checkbox has a different name and an explicit value like this:
但是，如果每个复选框都有不同的名称和显式值，如下所示：
<input type="checkbox" name="orange" id="orange" value="orange">
<input type="checkbox" name="apple" id="apple" value="apple">
You still need to use isset():
您仍然需要使用isset()：
if (isset($_POST['orange'])) {
// orange has been set and its value is "orange"
}
If you don't set a value, the default value is "on", but it won't be in the $_POST array unless it has been selected, so you still need to use isset().
如果不设置值，默认值为“on”，但除非已被选中，否则它不会出现在 $_POST 数组中，因此您仍然需要使用 isset()。
回答by Abdullah Jibaly
You need to give the inputs the same name:
您需要为输入提供相同的名称：
<input type="checkbox" name="selection[]" value="orange">
<input type="checkbox" name="selection[]" value="apple">
<input type="checkbox" name="selection[]" value="sky">
<input type="checkbox" name="selection[]" value="sea">
Then iterate over the $_POST['selection'] array in PHP.
然后在 PHP 中迭代 $_POST['selection'] 数组。
回答by webbiedave
You won't get the ids but the names will be associative indexes in the $_POSTarray (and $_REQUEST). NOTE: They will only be available in the array if they were checked by the client.
您不会获得 id，但名称将是$_POST数组（和$_REQUEST）中的关联索引。注意：只有在客户端检查它们时，它们才会在阵列中可用。
if ($_POST['oragne'] == 'on')
if ($_POST['oragne'] == 'on')
回答by Mahdi.Montgomery
You can set them up to post to PHP as arrays, if you build them similar to below:
您可以将它们设置为作为数组发布到 PHP，如果您构建它们类似于以下内容：
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input type="checkbox" name="box_group_1[oragne]" id="oragne">
<input type="checkbox" name="box_group_1[apple]" id="apple">
<input type="checkbox" name="box_group_1[sky]" id="sky">
<input type="checkbox" name="box_group_1[sea]" id="sea">
<br>
<br>
<input type="submit" name="Submit" value="Submit">
</form>
<?php
print_r($_POST['box_group_1']);
?>
