<?PHP
session_start();

$username = strip_tags($_POST['username']);
$password = strip_tags($_POST['password']);

$db = mysql_connect('localhost','--','--') or die(mysql_error());
mysql_select_db("--", $db);

if(strlen($username) < 2) $errorMsg = 'Je gebruikersnaam moet minimaal 2 tekens zijn.<br />';
if(strlen($password) < 2) $errorMsg .= 'Je wachtwoord moet minimaal 2 tekens zijn.<br />';
if(mysql_num_rows(mysql_query('SELECT username,password FROM gebruikers WHERE username='' . $username . ''')) != 0) $errorMsg .= 'De gebruikersnaam bestaat al.';
if(eregi(" ",$username)) $errorMsg .= 'Er mogen geen spaties in de gebruikersnaam.';

if(!empty($errorMsg)) die($errorMsg);

mysql_query('INSERT INTO users (username, password, email, code, ip) VALUES ('' . $username . '','' . $password . ''','' . $email . ''','' . $code . ''','".$_SERVER['REMOTE_ADDR']."') or die(mysql_error());
?>

[layout]