我尝试了“\n”和PHP_EOL，但都不起作用。 我收到$_post['message']，需要在发送之前向其中添加更多信息，并用换行符分隔。

if(isset($_POST['submit'])) {

$name = $_POST['full-name'];
$email = $_POST['email'];
$message = $_POST['message'];

$mailTo = 'mail@example.com';
$subject = 'Message from ' . $name;

$headers = array(
    'From' => $email,
    'Reply-To' => $email,
    'Content-Type' => 'text/html; charset=UTF-8'
);

$message = $message . PHP_EOL . "E-mail from: " . $email . PHP_EOL . "Name: " . $name;

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

}

你会怎么做？