Hilfe bei phpMailer

<?php
// error_reporting(E_ALL);
// ini_set('display_errors', true);

/**
 * This example shows how to handle a simple contact form safely.
 */

//Import PHPMailer class into the global namespace
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
use PHPMailer\PHPMailer\SMTP;

$msg = '';
if(isset($_POST['firstname']) && $_POST['firstname'] != "" )
    die();

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

    //Don't run this unless we're handling a form submission
    if (array_key_exists('email', $_POST)) {
        date_default_timezone_set('Etc/UTC');
    
        require 'phpmailer/src/Exception.php';
        require 'phpmailer/src/PHPMailer.php';
        require 'phpmailer/src/SMTP.php';
    
        //Create a new PHPMailer instance
        $mail = new PHPMailer();
    
        //Send using SMTP to localhost (faster and safer than using mail()) – requires a local mail server
        //See other examples for how to use a remote server such as gmail
    //    $mail->isSMTP();
    //    $mail->Host = 'localhost';
    //    $mail->Port = 25;
    
        //Server settings
        $mail->SMTPDebug = SMTP::DEBUG_SERVER;                      //Enable verbose debug output
        $mail->isSMTP();                                            //Send using SMTP
        $mail->Host       = 'smtp.gmail.com';                     //Set the SMTP server to send through
        $mail->SMTPAuth   = true;                                   //Enable SMTP authentication
        $mail->Username   = 'xxx';                     //SMTP username
        $mail->Password   = 'xxx';                               //SMTP password
        $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;         //Enable TLS encryption; `PHPMailer::ENCRYPTION_SMTPS` encouraged
        $mail->Port       = 587;                                    //TCP port to connect to, use 465 for `PHPMailer::ENCRYPTION_SMTPS` above
    
        //Use a fixed address in your own domain as the from address
        //**DO NOT** use the submitter's address here as it will be forgery
        //and will cause your messages to fail SPF checks
        $mail->setFrom('info@nf-fotogruppe-innsbruck.at', 'Naturfreunde Fotogruppe Innsbruck');
        //Choose who the message should be sent to
        //You don't have to use a <select> like in this example, you can simply use a fixed address
        //the important thing is *not* to trust an email address submitted from the form directly,
        //as an attacker can substitute their own and try to use your form to send spam
        $addresses = [
            'website' => 'info@nf-fotogruppe-innsbruck.at',
            'alex' => 'nf-fotogruppe-ibk@hotmail.com',
            'nf' => 'fotogruppe.innsbruck@naturfreunde.at',
        ];
        //Validate address selection before trying to use it
        if (array_key_exists('dept', $_POST) && array_key_exists($_POST['dept'], $addresses)) {
            $mail->addAddress($addresses[$_POST['dept']]);
        } else {
            //Fall back to a fixed address if dept selection is invalid or missing
            $mail->addAddress('info@nf-fotogruppe-innsbruck.at');

//            $mail->addCC('nf-fotogruppe-ibk@hotmail.com');
//            $mail->addCC('fotogruppe.innsbruck@naturfreunde.at');

            $mail->addBCC('mariposa.designography@outlook.com');
        }
        //Put the submitter's address in a reply-to header
        //This will fail if the address provided is invalid,
        //in which case we should ignore the whole request
        if ($mail->addReplyTo($_POST['email'], $_POST['name'])) {
            $mail->Subject = 'NF Fotogruppe Website | Betreff: ' . $_POST['subject'];
            //Keep it simple - don't use HTML
            $mail->isHTML(false);    
            //Build a simple message body
            $mail->Body = <<<EOT
{$_POST['name']} ({$_POST['email']}) hat dir eine Nachricht geschickt.\n\n
{$_POST['message']}
EOT;
            //Send the message, check for errors
            if (!$mail->send()) {
                //The reason for failing to send will be in $mail->ErrorInfo
                //but it's unsafe to display errors directly to users - process the error, log it on your server.
                $msg = 'Sorry, something went wrong. Please try again later.';
                        $invalid_classname = "form-invalid";
            } else {
                $msg = 'Message sent! Thanks for contacting us.';
                $message_sent = true;
            }
        } else {
            $msg = 'Invalid email address, message ignored.';
            $invalid_classname = "form-invalid";
        }
    }
}
?>

<!doctype html>
<html lang="de">
<head>
<meta charset="utf-8">
<meta name="robots" content="noindex">
<meta name="viewport" content="width=device-width, initial-scale=1.0">

<meta name="msapplication-TileColor" content="#51AF2E">
<meta name="theme-color" content="#51AF2E">
<meta name="apple-mobile-web-app-status-bar-style" content="#51AF2E">

<?php require 'favicon.html'; ?>

<link rel="stylesheet" href="stylesheets/contact_form.css">
<link rel="stylesheet" href="stylesheets/styles.css">

<title>Fotogruppe der Naturfreunde Innsbruck | Kontakt</title>

</head>

<body>

<?php require 'nav.html'; ?>
    
    
<div class="background">
    <main class="wrapper-main">
        <div class="content">
            
            Anfangstext



            <?php
            if($message_sent):
            ?>
            
            <br>
            <br>
            <h2>Vielen Dank! Deine Nachricht ist angekommen.</h2>



            <?php
            else:
            ?>

            <h2 class="contact">Schick uns doch gleich eine Nachricht</h2>

            <form action="kontakt_phpmailer2.php" method="POST">
                <div>
                    <label for="name">Name</label>
                    <input class="form-control" id="name" name="name" type="text" placeholder="Name" value="<?php echo $_POST['name']; ?>" required>
                </div>
                <div class="firstname">
                    <label for="firstname">Vorname</label>
                    <input class="form-control" id="firstname" name="firstname" type="text" placeholder="Vorname">
                </div>
                <div>
                    <label for="email">E-Mail</label>
                    <input class="form-control <?= $invalid_classname ?? "" ?>" id="email" name="email" type="email" placeholder="E-Mail" value="<?php echo $_POST['email']; ?>" required>
                </div>
                <div>
                    <label for="subject">Betreff</label>
                    <input class="form-control" id="subject" name="subject" type="text" placeholder="Worum geht's?" value="<?php echo $_POST['subject']; ?>" required>
                </div>
                <div class="textarea">
                    <label for="message">Nachricht</label>
                    <textarea class="form-control" id="message" name="message" minlength="20" placeholder="Deine Nachricht an uns ..." required><?php echo $_POST['message']; ?></textarea>
                </div>
                
                <button name="submit" type="submit">Senden</button>
            </form>

            <?php
            endif;
            ?>
        </div>
    </main>
</div>
    
<?php require 'footer.html'; ?>

<script src="scripts/jquery-3.5.1.min.js"></script>
    <script>
    // NAVIGATION Toggle
      $('.icon').click(function(){
        $('#nav-btn').toggleClass("cancel");
     });

    // BEGIN OF Navigation Link active
        const url = document.location.href;
        document.querySelectorAll('nav ul li a').forEach(item => {
            if (url.includes(item.href)) {
                item.classList.add('active');
            }
        });
    // END OF Navigation Link active
    
    
    // BEGIN OF Contact Form Effect
        $(function() {
    
    $(".form-control").on('focus', function(){

        $(this).parents("div").addClass('focused');

    });

    $(".form-control").on('blur', function(){

        $(this).parents("div").removeClass('focused');

    });

    });
    // END OF Contact Form Effect
    </script>
</body>
</html>

<?php
// error_reporting(E_ALL);
// ini_set('display_errors', true);

/**
 * This example shows how to handle a simple contact form safely.
 */

//Import PHPMailer class into the global namespace
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
use PHPMailer\PHPMailer\SMTP;

$msg = '';
if(isset($_POST['firstname']) && $_POST['firstname'] != "" )
    die();

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

    //Don't run this unless we're handling a form submission
    if (array_key_exists('email', $_POST)) {
        date_default_timezone_set('Etc/UTC');
    
        require 'phpmailer/src/Exception.php';
        require 'phpmailer/src/PHPMailer.php';
        require 'phpmailer/src/SMTP.php';
    
        //Create a new PHPMailer instance
        $mail = new PHPMailer();
    
        //Send using SMTP to localhost (faster and safer than using mail()) – requires a local mail server
        //See other examples for how to use a remote server such as gmail
    //    $mail->isSMTP();
    //    $mail->Host = 'localhost';
    //    $mail->Port = 25;
    
        //Server settings
        $mail->SMTPDebug = SMTP::DEBUG_OFF;                      //Enable verbose debug output        https://github.com/PHPMailer/PHPMailer/wiki/SMTP-Debugging
        $mail->isSMTP();                                            //Send using SMTP
        $mail->Host       = 'smtp.gmail.com';                     //Set the SMTP server to send through
        $mail->SMTPAuth   = true;                                   //Enable SMTP authentication
        $mail->Username   = 'xxx@gmail.com';                     //SMTP username
        $mail->Password   = 'xxx';                               //SMTP password
        $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;         //Enable TLS encryption; `PHPMailer::ENCRYPTION_SMTPS` encouraged
        $mail->Port       = 587;                                    //TCP port to connect to, use 465 for `PHPMailer::ENCRYPTION_SMTPS` above
    
        //Use a fixed address in your own domain as the from address
        //**DO NOT** use the submitter's address here as it will be forgery
        //and will cause your messages to fail SPF checks
        $mail->setFrom('info@nf-fotogruppe-innsbruck.at', 'Naturfreunde Fotogruppe Innsbruck');
        //Choose who the message should be sent to
        //You don't have to use a <select> like in this example, you can simply use a fixed address
        //the important thing is *not* to trust an email address submitted from the form directly,
        //as an attacker can substitute their own and try to use your form to send spam
        $addresses = [
            'website' => 'info@nf-fotogruppe-innsbruck.at',
            'alex' => 'nf-fotogruppe-ibk@hotmail.com',
            'nf' => 'fotogruppe.innsbruck@naturfreunde.at',
        ];
        //Validate address selection before trying to use it
        if (array_key_exists('dept', $_POST) && array_key_exists($_POST['dept'], $addresses)) {
            $mail->addAddress($addresses[$_POST['dept']]);
        } else {
            //Fall back to a fixed address if dept selection is invalid or missing
            $mail->addAddress('info@nf-fotogruppe-innsbruck.at');

            $mail->addCC('nf-fotogruppe-ibk@hotmail.com');
            $mail->addCC('fotogruppe.innsbruck@naturfreunde.at');

            $mail->addBCC('mariposa.designography@outlook.com');
        }
        //Put the submitter's address in a reply-to header
        //This will fail if the address provided is invalid,
        //in which case we should ignore the whole request
        if ($mail->addReplyTo($_POST['email'], $_POST['name'])) {
            $mail->Subject = 'NF Fotogruppe Website | Betreff: ' . $_POST['subject'];
            //Keep it simple - don't use HTML
            $mail->isHTML(false);    
            $mail->CharSet = 'UTF-8';
            //Build a simple message body
            $mail->Body = <<<EOT
{$_POST['name']} ({$_POST['email']}) hat dir eine Nachricht geschickt.\n\n
{$_POST['message']}
EOT;
            //Send the message, check for errors
            if (!$mail->send()) {
                //The reason for failing to send will be in $mail->ErrorInfo
                //but it's unsafe to display errors directly to users - process the error, log it on your server.
                $msg = 'Sorry, something went wrong. Please try again later.';
                        $invalid_classname = "form-invalid";
            } else {
                $msg = 'Message sent! Thanks for contacting us.';
                $message_sent = true;
            }
        } else {
            $msg = 'Invalid email address, message ignored.';
            $invalid_classname = "form-invalid";
        }
    }
}
?>

<!doctype html>
<html lang="de">
<head>
<meta charset="utf-8">
<meta name="robots" content="noindex">
<meta name="viewport" content="width=device-width, initial-scale=1.0">

<meta name="msapplication-TileColor" content="#51AF2E">
<meta name="theme-color" content="#51AF2E">
<meta name="apple-mobile-web-app-status-bar-style" content="#51AF2E">

<?php require 'favicon.html'; ?>

<link rel="stylesheet" href="stylesheets/contact_form.css">
<link rel="stylesheet" href="stylesheets/styles.css">

<title>Fotogruppe der Naturfreunde Innsbruck | Kontakt</title>

</head>

<body>

<?php require 'nav.html'; ?>
    
    
<div class="background">
    <main class="wrapper-main">
        <div class="content">
            <h1>Schreib uns oder komm vorbei!</h1>
            



            <?php
            if($message_sent):
            ?>
            
            <br>
            <br>
            <h2>Vielen Dank! Deine Nachricht ist angekommen.</h2>



            <?php
            else:
            ?>

            <h2 class="contact">Schick uns doch gleich eine Nachricht</h2>

            <form action="kontakt_phpmailer2.php" method="POST">
                <div>
                    <label for="name">Name</label>
                    <input class="form-control" id="name" name="name" type="text" placeholder="Name" value="<?php echo $_POST['name']; ?>" required>
                </div>
                <div class="firstname">
                    <label for="firstname">Vorname</label>
                    <input class="form-control" id="firstname" name="firstname" type="text" placeholder="Vorname">
                </div>
                <div>
                    <label for="email">E-Mail</label>
                    <input class="form-control <?= $invalid_classname ?? "" ?>" id="email" name="email" type="email" placeholder="E-Mail" value="<?php echo $_POST['email']; ?>" required>
                </div>
                <div>
                    <label for="subject">Betreff</label>
                    <input class="form-control" id="subject" name="subject" type="text" placeholder="Worum geht's?" value="<?php echo $_POST['subject']; ?>" required>
                </div>
                <div class="textarea">
                    <label for="message">Nachricht</label>
                    <textarea class="form-control" id="message" name="message" minlength="20" placeholder="Deine Nachricht an uns ..." required><?php echo $_POST['message']; ?></textarea>
                </div>
                
                <button name="submit" type="submit">Senden</button>
            </form>

            <?php
            endif;
            ?>
        </div>
    </main>
</div>
    
<?php require 'footer.html'; ?>

<script src="scripts/jquery-3.5.1.min.js"></script>
    <script>
    // NAVIGATION Toggle
      $('.icon').click(function(){
        $('#nav-btn').toggleClass("cancel");
     });

    // BEGIN OF Navigation Link active
        const url = document.location.href;
        document.querySelectorAll('nav ul li a').forEach(item => {
            if (url.includes(item.href)) {
                item.classList.add('active');
            }
        });
    // END OF Navigation Link active
    
    
    // BEGIN OF Contact Form Effect
        $(function() {
    
    $(".form-control").on('focus', function(){

        $(this).parents("div").addClass('focused');

    });

    $(".form-control").on('blur', function(){

        $(this).parents("div").removeClass('focused');

    });

    });
    // END OF Contact Form Effect
    </script>
</body>
</html>