Php 为什么可以'；我看不到联系表上的电子邮件地址吗？

我收到一封电子邮件，但它将从未知地址读取。其他一切似乎都起作用了。这里有一个链接，指向我对php了解不多的页面

    <?php

if (isset($_POST['submit'])) {
    $name = $_POST['name'];
    $email = $_POST['email'];
    $message = $_POST['message'];

    $mailTo = "contact@podmtg.com";
    $headers = "From: ".$mailFrom;
    $txt = "You have recieved an email from ".$name.".\n\n".$message;

    mail($mailTo, $subject, $txt, $headers);

    header("Location: contact.html?mailsend");
}

?>

<form action="contactform.php" method="post" onsubmit="return confirm('Are you sure you want to submit this form?');">
             <input type="text" name="name" placeholder="Name" required="required">
             <input type="text" name="email" placeholder="Email" required="required">
             <textarea name="message" placeholder="Write message here..." required="required"></textarea>
             <button type="submit" name="submit">SUBMIT</button>
        </form>

提交

在本文中，您提到了“$headers=“From:”.$mailFrom；但找不到$mailFrom。使用$email代替$mailFrom。

我更改了代码。你们是对的。谢谢大家!

    <?php

if (isset($_POST['submit'])) {
    $name = $_POST['name'];
    $mailFrom = $_POST['email'];
    $message = $_POST['message'];

    $mailTo = "contact@podmtg.com";
    $headers = "From: ".$mailFrom;
    $txt = "You have recieved an email from ".$name.".\n\n".$message;

    mail($mailTo, $headers, $txt);

    header("Location: index.html?mailsend");
}

?>

$email

！=

$mailFrom

$email具有电子邮件地址，但您正在尝试从$emailFrom读取。我想知道为什么它不抛出异常。$mailFrom未定义。