如何使用现有的PHP表单在主题行中显示域名

Question

当前的表单工作得很好，并且跨多个域实现，但是主题行是相同的。我想跨多个域部署表单w/out必须手动输入"SPECIFIC_DOMAIN.com"到每个表单主题行。是否有一种方法，让主题行表示哪个URL的联系形式是来自动态?当前的主题行是静态的:"联系邮件"。提前谢谢。

<?php
if ($_POST) {
require('constant.php');

$user_name      = filter_var($_POST["name"], FILTER_SANITIZE_STRING);
$user_email     = filter_var($_POST["email"], FILTER_SANITIZE_EMAIL);
$user_phone     = filter_var($_POST["phone"], FILTER_SANITIZE_STRING);
$content   = filter_var($_POST["content"], FILTER_SANITIZE_STRING);

if(empty($user_name)) {
$empty[] = "<b>Name</b>";       
}
if(empty($user_email)) {
$empty[] = "<b>Email</b>";
}
if(empty($user_phone)) {
$empty[] = "<b>Phone Number</b>";
}   
if(empty($content)) {
$empty[] = "<b>Comments</b>";
}

if(!empty($empty)) {
$output = json_encode(array('type'=>'error', 'text' => implode(", ",$empty) . ' Required!'));
die($output);
}

if(!filter_var($user_email, FILTER_VALIDATE_EMAIL)){ //email validation
$output = json_encode(array('type'=>'error', 'text' => '<b>'.$user_email.'</b> is an invalid Email, please correct it.'));
die($output);
}

//reCAPTCHA validation
if (isset($_POST['g-recaptcha-response'])) {

require('component/recaptcha/src/autoload.php');        

$recaptcha = new ReCaptchaReCaptcha(SECRET_KEY);
$resp = $recaptcha->verify($_POST['g-recaptcha-response'], $_SERVER['REMOTE_ADDR']);
if (!$resp->isSuccess()) {
$output = json_encode(array('type'=>'error', 'text' => '<b>Captcha</b> Validation Required!'));
die($output);               
} 
}

$toEmail = "[e-mail]";
$mailHeaders = "From: " . $user_name . "<" . $user_email . ">rn";
$mailBody = "User Name: " . $user_name . "n";
$mailBody .= "User Email: " . $user_email . "n";
$mailBody .= "Phone: " . $user_phone . "n";
$mailBody .= "Content: " . $content . "n";
if (mail($toEmail, "Contact Mail", $mailBody, $mailHeaders)) {
$output = json_encode(array('type'=>'message', 'text' => 'Hey there '.$user_name .'! Your message is on the way. Cheers.'));
die($output);
} else {
$output = json_encode(array('type'=>'error', 'text' => 'Unable to send email, please contact'.SENDER_EMAIL));
die($output);
}
}
?>

Answer 1

不用:

mail($toEmail, "Contact Mail", $mailBody, $mailHeaders)

使用:

mail($toEmail, "Contact Mail from " . $_SERVER["SERVER_NAME"], $mailBody, $mailHeaders)

看到:$ _SERVER

注意$_SERVER["HTTP_HOST"]是由客户端设置的，这意味着它是不可靠的，而$_SERVER["SERVER_NAME"]是由服务器设置的。

Answer 2

我认为你可以这样做:

if (mail($toEmail, "Contact Mail", $mailBody, $mailHeaders)) {

$sub = $_SERVER['HTTP_HOST'];
if (mail($toEmail, $sub, $mailBody, $mailHeaders)) {

你可以考虑这样写:

$sub = 'Mail from ' . $_SERVER['HTTP_HOST'];

相反。