<?php
require 'PHPMailer/src/Exception.php';
require 'PHPMailer/src/PHPMailer.php';
require 'PHPMailer/src/SMTP.php';

//HTML Form Removel
function removeHTML($texttovalid){
        $texttovalid = trim($texttovalid);
        if(strlen($texttovalid)>0){
            $texttovalid = htmlspecialchars(stripslashes($texttovalid));
        }
        return $texttovalid;
}


//Form POST variables
$nome = removeHTML($_POST['nome']);
$email = removeHTML($_POST['email']);
$msg ='';

//  Begining of validating variables
if(isset($_POST['submit']))
{
    $required = array("nome", "email");
    foreach($_POST as $key=>$value)
    {
        if (empty($value) && in_array($key, $required) === true)
        {
            $msg = 'Fill in required fields.';
            break 1;
        }
        if (!filter_var($email, FILTER_VALIDATE_EMAIL))
       {
           $msg = 'Invalid email';
       }
    }
    if (empty($msg) === true) {

        $body = "rNome: $nome";
        $body .= "rnE-mail: $email";

        $bodysend = utf8_decode($body);


        $mail = new PHPMailer(true);                              // Passing `true` enables exceptions
        try {
            //Server settings
            $mail->SMTPDebug = 1;
            $mail->isSMTP();                                      // Set mailer to use SMTP
            $mail->Host = 'mail.dfg.pt';  // Specify main and backup SMTP servers
            $mail->SMTPAuth = true;                               // Enable SMTP authentication
            $mail->Username = 'geral@xxx.com';                 // SMTP username
            $mail->Password = 'xxxxxx';                           // SMTP password
            $mail->SMTPSecure = 'tls';                            // Enable TLS encryption, `ssl` also accepted
            $mail->Port = 587;          // TCP port to connect to
            $mail->setLanguage('pt', 'PHPMailer/language/');

            //Recipients
            $mail->setFrom('geral@xxx.com', 'DFG');
            $mail->addAddress($email, $nome);     // Add a recipient
            $mail->addBCC('info@xxx.com');

            //Content
            $mail->isHTML(true);                                  // Set email format to HTML
            $mail->Subject = 'This is a subject';
            $mail->Body    = $bodysend;

            $mail->send();
            $msg = 'Thank you.';
        } catch (Exception $e) {
            $msg = 'Error occurred. Mailer Error: '. $mail->ErrorInfo;
        }

    }

} ?>

<div class="alert-msg"><?php echo $msg;?></div>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="multipart/form-data">
    <div class="mt-10">
        <input type="text" name="nome" placeholder="Nome" onfocus="this.placeholder = ''" onblur="this.placeholder = 'Nome'" class="single-input">
    </div>
    <div class="mt-10">
        <input type="email" name="email" placeholder="E-mail" onfocus="this.placeholder = ''" onblur="this.placeholder = 'E-mail'" required class="single-input">
    </div>
    <div class="mt-10">
        <button type="submit" class="primary-btn hover submit-btn d-inline-flex align-items-center mt-20"><span class="mr-10">Submit</span><span class="lnr lnr-arrow-right"></span></button>
    </div>
</form>

PHP Notice:  Undefined index: nome in /public_html/index.php on line 17
[27-Oct-2018 14:13:57 UTC]
PHP Notice:  Undefined index: email in /public_html/index.php on line 18