W33 - registerform

<form method="post">
<fieldset>
Username: <input type="text" name="username" required maxlength="32" minlenght="3"><br>
Email: <input type="email" name="email" required maxlength="255" minlenght="6"><br>
Password: <input type="password" name="password" required>
<input type="submit" name="submited" value="register!">
</fieldset>
</form>
<?php
if(isset($_POST['submited'])) {
    try {
        $query = $dbh->prepare("SELECT * from users WHERE login = :username OR email = :email");
        $query->bindParam(':username', $_POST['username'], PDO::PARAM_STR, 32);
        $query->bindParam(':email', $_POST['email'], PDO::PARAM_STR, 255);
        $query->execute();
        $result = $query->fetchAll();
        if(empty($result)) {
            $query = $dbh->prepare("INSERT INTO users (login, pwdhash, email, regdate) VALUES (:username, :pwdhash, :email, NOW())");
            $query->bindParam(':username', $_POST['username'], PDO::PARAM_STR, 32);
            $query->bindParam(':email', $_POST['email'], PDO::PARAM_STR, 255);
            $query->bindParam(':pwdhash', sha1($_POST['password']), PDO::PARAM_STR, 41);
            $query->execute();
        } else {
            echo "Login or email already taken, plea
      se choose different.";
            foreach($result as $row) {
                echo $row['uid'];
            }
        }
    }
    catch(PDOException $e) {
        echo $e->getMessage();
    }
}
?>