Help with high school project (how to redirect a contact form)

[dafaher]

Hello everyone, first of all, thanks for reading. I'm new to this so I have some doubts about how to create a contact form. I'm doing a project for school and got the form to work correctly, but would like to add a redirect to index.html once the message is sent successfully. I have no idea how to do that, I've been researching on forums, etc but nothing seems to work.

Also, is there a way to include the IP, browser, operating system, etc the person is using when sending the message? It would be great for statistical reasons. Thank you very much in advance!!

Oh btw, the code I'm using is this:

<?php

    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\Exception;

    $myPersonalEmail = "blah blah blah";
    
    $externalMailHost = "blah blah blah";
    $externalMailAddress = "blah blah blah";
    $externalMailSMTPAuth = true;
    $externalMailUsername = "blah blah blah";
    $externalMailPassword = "blah blah blah";
    $externalMailSMTPSecure = "tls";
    $externalMailPort = 587;    

    require $_SERVER['DOCUMENT_ROOT'] . '/blah blah blah/Exception.php';
    require $_SERVER['DOCUMENT_ROOT'] . '/blah blah blah/PHPMailer.php';
    require $_SERVER['DOCUMENT_ROOT'] . '/blah blah blah/SMTP.php';

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

        $mail = new PHPMailer(true);

        $mail->SMTPDebug = 0;
        $mail->isSMTP();

        $mail->Host = $externalMailHost;
        $mail->SMTPAuth = $externalMailSMTPAuth;
        $mail->Username = $externalMailUsername;
        $mail->Password = $externalMailPassword;
        $mail->SMTPSecure = $externalMailSMTPSecure;
        $mail->Port = $externalMailPort;
        
        $mail->setFrom($externalMailAddress, 'Contacto');
        $mail->addAddress($myPersonalEmail);
        $mail->addReplyTo($_POST['email'], $_POST['nombre']);

        $mail->isHTML(false);
		$mail->Body = <<<EOT
		Asunto: {$_POST['asunto']}
		Nombre: {$_POST['nombre']}
		Email: {$_POST['email']}
		Mensaje: {$_POST['mensaje']}
		EOT;
        
        try {
            $mail->send();
            echo 'Tu mensaje se envió correctamente; recibirás una respuesta a la brevedad!';
        } catch (Exception $e) {
            echo "Tu mensaje no pudo ser enviado! PHPMailer Error: {$mail->ErrorInfo}";
        }
        
    } else {
        echo "Hay un problema con el documento contacto.html!";
    }
    
?>

[Synchro]

Your code looks fine as far as email sending goes, though I'd recommend you learn to use composer.

To redirect after doing something, you need to send the browser a Location header telling it where to go. Importantly, you have to do this before you send any output. So replace your echo statements with lines using the [header` function](https://www.php.net/manual/en/function.header.php), and then immediately exit your script, like this:

try {
    $mail->send();
    header('Location: /email_success.php');
    exit;
} catch (Exception $e) {
    header('Location: /email_failed.php');
    exit;
}
   } else {
        echo "Hay un problema con el documento contacto.html!";
    }

where each destination is a script (or just an HTML file) that displays an appropriate post-send (or post-failure) message.

[dafaher]

Thank you so muchm that'0s exactly what I was looking for. Unfortunately, for some reason it shows me an error;

"Warning: Cannot modify header information - headers already sent by (output started at /storage/ssd3/325/xxxxx/SMTP.php:280) in /storage/ssd3/325/xxxxx/contacto.php on line 48"

I received the message anyway, but it didn't redirect me to the right url. Thank you very much for the link you shared with me and your suggestion about learning composer, I'll take a look at both as soon as I get home. Thanks again, have a great day!

[Synchro]

This is what I mentioned – That's what happens when you produce output before setting the headers. Make sure that there is no content before your opening <?php tag, and that you have no echo, print or similar commands that produce any output at all (for example having SMTPDebug enabled) before sending a header.

[dafaher]

Oh I see, I had not understood in your first message. Perfect, as soon as I get home I'll take a look at it. Thank you very much again!

[dafaher]

I just wanted to tell you that your script worked like a charm. Thank you very much!

[sandemoit]

how did you overcome it? let me know, I'm experiencing the same thing