我是php新手。我有一些发送电子邮件的功能，但是无法正常工作...是否有要导入的软件包？ 在控制台中，我收到解析错误...
XML Parsing Error: no root element found.
我该如何解决？...
<?php
$siteOwnersEmail = 'user@website.com'; // Replace this with your own email address
if($_POST) {
$name = trim(stripslashes($_POST['contactName']));
$email = trim(stripslashes($_POST['contactEmail']));
$subject = trim(stripslashes($_POST['contactSubject']));
$contact_message = trim(stripslashes($_POST['contactMessage']));
// Check Name
if (strlen($name) < 2) {
$error['name'] = "Please enter your name.";
}
// Check Email
if (!preg_match('/^[a-z0-9&\'\.\-_\+]+@[a-z0-9\-]+\.([a-z0-9\-]+\.)*+[a-z]{2}/is', $email)) {
$error['email'] = "Please enter a valid email address.";
}
// Check Message
if (strlen($contact_message) < 15) {
$error['message'] = "Please enter your message. It should have at least 15 characters.";
}
// Subject
if ($subject == '') { $subject = "Contact Form Submission"; }
// Set Message
$message .= "Email from: " . $name . "<br />";
$message .= "Email address: " . $email . "<br />";
$message .= "Message: <br />";
$message .= $contact_message;
$message .= "<br /> ----- <br /> This email was sent from your site's contact form. <br />";
// Set From: header
$from = $name . " <" . $email . ">";
// Email Headers
$headers = "From: " . $from . "\r\n";
$headers .= "Reply-To: ". $email . "\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
if (!$error) {
ini_set("sendmail_from", $siteOwnersEmail); // for windows server
$mail = mail($siteOwnersEmail, $subject, $message, $headers);
if ($mail) { echo "OK"; }
else { echo "Something went wrong. Please try again."; }
} # end if - no validation error
else {
$response = (isset($error['name'])) ? $error['name'] . "<br /> \n" : null;
$response .= (isset($error['email'])) ? $error['email'] . "<br /> \n" : null;
$response .= (isset($error['message'])) ? $error['message'] . "<br />" : null;
echo $response;
} # end if - there was a validation error
}?>