php - POST 形式的数组

Question

我想在输入文本数组中保存许多“电子邮件方向”，并且我希望它们与名为“订阅”的复选框数组相关，所以我这样做:

<input type="email" name="email[]">
<input type="checkbox" name="emailsub[]" value="1"/>

如果我尝试打印它们，给出值:

<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="cca3a2a98ca3a2a9e2afa3a1" rel="noreferrer noopener nofollow">[email protected]</a> checked
<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="790d0e16390d0e16571a1614" rel="noreferrer noopener nofollow">[email protected]</a> unchecked
<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c8bca0baadad88bca0baadade6aba7a5" rel="noreferrer noopener nofollow">[email protected]</a> checked

与:

$emails = $_POST["email"];
    for ($i = 0, $limit = count($emails); $i < $limit; $i++){
        echo "Email: " . $_POST["email"][$i] . "<br />";
        echo "Sub: " . $_POST["emailsub"][$i] . "<br />";
    }

它给了我这个结果:

Email: <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6f00010a2f00010a410c0002" rel="noreferrer noopener nofollow">[email protected]</a>
Sub: 1
Email: <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="76020119360201195815191b" rel="noreferrer noopener nofollow">[email protected]</a>
Sub: 
Email: <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="91e5f9e3f4f4d1e5f9e3f4f4bff2fefc" rel="noreferrer noopener nofollow">[email protected]</a>
Sub: 
Email: 1
Sub:

我做错了什么？

非常感谢 埃斯特万

Answer 1

你有一个逻辑错误。 与 $_POST['emailsub'] 和 $_POST['email'] 没有关联。

如果您没有选中任何 emailsub[] 输入复选框，则 $_POST['emailsub'] 数组为空。

如果仅检查最后一个输入，则 $_POST['emailsub'] 数组只有一个带有键 0 的元素(而不是 2).

您应该在 html 中插入索引:

<input type="email" name="email[0]">
<input type="checkbox" name="emailsub[0]" value="1"/>
<input type="email" name="email[1]">
<input type="checkbox" name="emailsub[1]" value="1"/>
<!-- and so on.. -->

和 PHP

$emails = $_POST['email'];
$checks = $_POST['emailsub'];

foreach($emails as $k=>$email) {
    echo "$email " . (isset($checks[$k])? " checked" : "unchecked");
}