Untitled

<?php
function check_email($mail_address) {
    $pattern = "/^[\w-]+(\.[\w-]+)*@";
    $pattern .= "([0-9a-z][0-9a-z-]*[0-9a-z]\.)+([a-z]{2,4})$/i";
    if (preg_match($pattern, $mail_address)) {
        $parts = explode("@", $mail_address);
        if (checkdnsrr($parts[1], "MX")){
            // het e-mail domein bestaat
            return true;
        } else {
            // het e-mail domein bestaat niet
            return false;
        }
    } else {
        //Het e-mauiladres heeft verkeerde karakters
        return false;
    }
}

function sendEmailNewUser($uname,$email) {
    global $link;
    global $_SESSION;
    $tohash = $uname . '_' . $email . rand(0,10000);
    $key = password_hash($tohash, PASSWORD_DEFAULT);
    $encUname = urlencode(base64_encode($uname));
    if ($SQL = $link->prepare("INSERT INTO 04_Users
        (`Username`,`Password`,`Email`) VALUES (?,?,?)"))
    {
        $SQL->bind_param('sss',$uname,$key,$email);
        $SQL->execute();
        $SQL->close();
        $passwordLink = "<a href=\"http://6info.go-ao.eu/leander/021hashing/wwset.php?a=set&email=" . $key . "&u=" . $encUname . "\">http://6info.go-ao.eu/leander/021hashing/wwset.php?a=set&email=" . $key . "&u=" . $encUname . "</a>";
        $message = "<html><body>Beste $uname,<br>";
        $message .= "<p>Gelieve volgende link te volgen om je wachtwoord en de veiligheidsvraag in te stellen:</p>";
        $message .= "<p>$passwordLink</p>";
        $message .= "<p>Gelieve de volledige link in je browser te kopiëren indien de link niet werkt.</p>";
        $message .= "<p>Alvast bedankt,</p>";
        $message .= "<p>LJCC</p>";
        $mail = new PHPMailer;
        $mail->isSMTP();
        $mail->Host = 'smtp.gmail.com';
        $mail->SMTPAuth = true;
        $mail->Username = "leandercolpaert@go-ao.eu";
        $mail->Password = 'frAyech4';
        $mail->SMTPSecure = 'tls';
        $mail->Port = 587;
        $mail->setFrom('leandercolpaert@go-ao.eu', 'Student GO-AO.EU');
        $mail->addAddress($email, $uname);
        $mail->isHTML(true);
        $mail->Subject = "Instellen wachtwoord en veiligheidsvraag";
        $mail->Body    = $message;
        $mail->AltBody = strip_tags($message);
        if ($mail->send()) {
            $_SESSION['success'] = '<strong>Mail verzonden!</strong><p>Mail is verzonden naar '.$email.'</p>';
            return;
        } else {
            $_SESSION['alert'] = '<strong>FOUT bij verzenden!</strong><p>Er is iets fout gelopen tijdens het verzenden van je mail:</p><p>' . $mail->ErrorInfo .'</p>';
            return;
        }
    }
}
function checkEmailKey($key,$uname)
{
    global $link;
    if ($SQL = $link->prepare("SELECT `ID` FROM `04_Users`
                               WHERE `Password` = ? AND `Username` = ?"))
    {
        $SQL->bind_param('ss',$key,$uname);
        $SQL->execute();
        $SQL->store_result();
        $numRows = $SQL->num_rows();
        $SQL->bind_result($ID);
        $SQL->fetch();
        $SQL->close();
        if ($numRows > 0 && $ID != '')
        {
            return array('status'=>true,'userID'=>$ID);
        }
    }
    return array('status'=>false,'userID'=>0);
}