jQuery3+Ajax+PHP发送邮件形式不发送邮件

Question

我一直在尝试重写 jQuery + PHP 发送邮件表单，但尽管尝试了 3 种方法，它仍然抛出 500 内部服务器错误。我正在重写，因为我正在将网站迁移到 jQuery 3 并致力于提高性能和标准符合我继承的代码库。

我知道 500 是服务器错误，站点托管在 MS IIS 上，但遗留代码在同一台服务器上运行，因此一定有一些特定于我的实现。

也许你能看到我遗漏的东西？

Live page throwing the error
Legacy page with working form (jQuery 2.2.4)

下面的代码大多遵循 this example on Stack Overflow but I've also tried following this youtube and this tutorial 但没有成功。

希望在用尽我的其他选择后在这里得到答案。提前致谢！

HTML（简体）

<form action="send_mail_facility2.php" id="facility-contact-form" method="post" autocomplete="on">
  <!-- MAIN FIELDS -->
  <input id="sendTo" name="sendTo" type="text" value="Facility One" style="display: none;">
  <input id="name" name="name" type="text" placeholder="Name" required>
  <input id="email" name="email" type="email" placeholder="Email" required>
  <input id="phone" name="phone" type="text" placeholder="Phone number">
  <textarea id="message" name="message" type="text" placeholder="Message"></textarea>

  <!-- ADDITIONAL FIELDS - separate js shows section when checkbox selected -->
  <input id="infopack-checkbox" type="checkbox" name="checkbox" value="checkbox"><span class="information-pack">&nbsp;I would like to receive an information pack.</span>
  <div id="address-details">
    <input id="address" name="address" type="text" placeholder="Address">
    <input id="city" name="city" type="text" placeholder="City">
    <input id="postcode" name="postcode" type="text" placeholder="Postcode">
  </div>

  <!-- reCAPTCHA html & js -->

  <input id="facility-submit" name="submit" type="submit" value="Send request" disabled style="opacity: 0.3;"> <!-- disabled & inline style for captcha -->
  <p class="status" style="display: none" role="alert">Thanks, someone will be in contact with you regarding your enquiry soon.</p>
</form>

JS

$(function(){
  var request;
  $("#facility-contact-form").on("submit", function(event){
    event.preventDefault();
    if (request) {
      request.abort();
    }
    var $form = $(this);
    var $inputs = $form.find("input, select, button, textarea");
    var serializeData = $form.serialize();
    $inputs.prop("disabled", true);
    request = $.ajax({
      url: "send_mail_facility2.php",
      type: "post",
      data: serializeData
    });
    request.done(function (response, textStatus, jqXHR){
      console.log("Hooray, it worked!");
    });
    request.fail(function (jqXHR, textStatus, errorThrown){
      console.error("The following error occurred: "+
                   textStatus, errorThrown);
    });
    request.always(function () {
      $inputs.prop("disabled", false);
    });
  });
});

PHP

if ($_SERVER["REQUEST_METHOD"] == "POST") {

  // email headers
  $to       = $_POST["sendTo"];
  $subject  = "Custom subject line";
  $headers  = "From: NoReply &lt;noreply@noreply.com&gt;";

  // sender data
  $name     = $_POST["name"];
  $email    = filter_var(trim($_POST["email"]), FILTER_SANITIZE_EMAIL);
  $phone    = trim($_POST["phone"]);
  $message  = trim($_POST["message"]);
  $address  = isset($_POST["address"]) ? trim($_POST["address"]) : null;
  $city     = isset($_POST["city"]) ? trim($_POST["city"]) : null;
  $postcode = isset($_POST["postcode"]) ? trim($_POST["postcode"]) : null;

  //define recipients
  $sendTo = $_POST["sendTo"];

  if($sendTo == 'Facility One') {
    $to = 'mytestemail@example.com';
  } elseif($sendTo == 'Facility Two') {
    $to = 'two@clientemail.com';
  } elseif($sendTo == 'Facility Three') {
    $to = 'three@clientemail.com';
  }

  if (isset($_POST['checkbox'])) {
    $infoPack = "Yes";
  } else {
    $infoPack = "No";
  }
  if (empty($_POST["address"])) {
    $address = "N/A";
  } else {
  }
  if (empty($_POST["city"])) {
    $city = "N/A";
  } else {
  }
  if (empty($_POST["postcode"])) {
    $postcode = "N/A";
  } else {
  }

  // email content
  $content = "Enquiry for facility: $sendTo\n\n";
  $content .= "Name: $name\n\n";
  $content .= "Email: $email\n\n";
  $content .= "Phone: $phone\n\n";
  $content .= "Message:\n$message\n\n";
  $content .= "Would user like to receive an information pack?: $infoPack\n\n";
  $content .= "Address: $address\n\n";
  $content .= "City: $city\n\n";
  $content .= "Postcode: $postcode\n\n\n";
  $content .= "Static footer message here\n\n";

  // Send the email
  $success = mail($to, $subject, $content, $headers);
  if ($success) {
    http_response_code(200);
    echo "Thanks, someone will be in contact with you regarding your enquiry soon.";
  } else {
    http_response_code(500);
    echo "Oops, something went wrong - we couldn't send your message.";
  }

} else {
    // Not a POST request, set a 403 (forbidden) response code.
    http_response_code(403);
    echo "Oops, something went wrong - we couldn't send your message.";
}

有什么想法吗？

Answer 1

感谢@Darren 指出错误响应。

问题似乎是我从 this tutorial.

的第 3 步复制的 from header 语法

我改了：

$headers  = "From: NoReply &lt;noreply@noreply.com&gt;";

至：

$headers = "FROM: NoReply <noreply@noreply.com>";

我没有从 the question/answer 那里得到这个被列为重复的答案，尽管这个答案很有用。

对于其他 PHP 新手，使用 Firefox/Chrome 开发者工具网络选项卡，运行通过提交您的表单，过滤您的 php 文件，然后查看响应选项卡以查看包含任何错误的完整响应。

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