为什么我的表格不再出现？

Question

我在PHP项目中创建了一个联系表单，我一直在尝试发送邮件，在此过程中我一直在改变一些代码，例如删除我的联系表单。现在我重新添加了表单，但它没有显示在浏览器上：

这是名为contact.php的实际文件：

<?php

    define("TITLE", "Contact Us | MicroUrb");

    include('includes/header.php');

/**
 * PHPMailer Autoloader
 */
require '../vendor/phpmailer/phpmailer/PHPMailerAutoload.php';


/**
 * Configure PHPMailer with your SMTP server settings
 */
$mail = new PHPMailer();

$mail->isSMTP();
$mail->Host = 'smtp.gmail.com';
$mail->Port = 465;
$mail->SMTPAuth = true;
$mail->Username = 'myemail@example.com';
$mail->Password = 'secret';
$mail->SMTPSecure = 'tls';


/**
 * Enable SMTP debug messages
 */
$mail->SMTPDebug = 2;


/**
 * Send an email
 */
$mail->setFrom('sender@gmail.com');
$mail->addAddress('recipient@gmail.com');

$mail->Subject = 'An email sent from PHP';
$mail->Body = 'This is a test message';

if ($mail->send()) {
    echo 'Message sent!';
} else {
    echo 'Mailer error: ' . $mail->ErrorInfo;
}

?>

    <div id="contact">
        <hr>
        <h1 class="contact">Get in touch with us!</h1>



        <form method="post" action="" id="contact-form">
            <label for="name">Your name</label>
            <input type="text" id="name" name="name">

            <label for="email">Your email</label>
            <input type="email" id="email" name="email">

            <label for="message">and your message</label>
            <textarea id="message" name="message"></textarea>

            <input type="checkbox" id="subscribe" name="name" value="Subscribe">
            <label for="">Subscribe to newsletter</label>

            <input type="submit" class="button next" name="contact_submit" value="Send Message">

        </form>



        <hr>

    </div>


<?php include('includes/footer.php'); ?>