Wat is de fout

<?
error_reporting(E_ALL);
include('config.php');

session_start();

function controleer_ingelogd()
{
	if(Isset($_SESSION['ingelogd']))
	{ 
	return true;
	}
	elseif(Isset($_COOKIE['LogIn']))
	{
	list($gebruiker,$wachtwoord) = Explode(";",$_COOKIE['adpan_login']); 
	
		if($gebruiker = $cfg['instel']['adminuser'] && $wachtwoord = md5($cfg['instel']['adminpass']))
		{
		$_SESSION['ingelogd'] = true; Return True;
		}
	}
	else
	{
	return false;
	}
}
?>
<?
if(!Controleer_ingelogd())
{
	if(!isset($_POST['LogIn']))
	{
?>
<form name="frmlogin" method="POST">
<strong>Admin:inloggen</strong><br><br>
<table width="100%">
<tr>
<td width="25%"><img src="images/icon_mini_profile.gif">Gebruikersnaam :</td>
<td width="75%"><input type="text" name="gebruikersnaam"></td>
</tr>
<tr>
<td width="25%"><img src="images/icon_mini_members.gif">Wachtwoord :</td>
<td width="75%"><input type="text" name="wachtwoord"></td>
</tr>
<tr>
<td><input type="submit" name="login" value="Log in"></td>
</tr>
</table>
</form>
<?
	}
	else
	{
            if($_POST['gebruikersnaam'] != $cfg['instel']['adminuser'] && $_POST['wachtwoord'] != $cfg['instel']['adminpass'])
		{
		$_SESSION['ingelogd'] = true;
		}
		
            setcookie("LogIn" , $_POST['gebruikersnaam'].";".md5($_POST['wachtwoord']) , time()+24*60*60*61 , "/" );
	
            echo "U bent succesvol ingelogd.<META http-equiv='refresh' content='2;url=\"?pagina=adminpanel/index\" />";
            }
            else
            {
            echo "Verkeerde logininformatie, u wordt teruggestuurd." ."<META HTTP-EQUIV=\"Refresh\" CONTENT=\"2;url=".$_SERVER['PHP_SELF']."\" />";
            }
      }
}
?>

<?
error_reporting(E_ALL);
include('config.php');
 
session_start();
 
function controleer_ingelogd()
{
	if(Isset($_SESSION['ingelogd']))
	{ 
	return true;
	}
	elseif(Isset($_COOKIE['LogIn']))
	{
	list($gebruiker,$wachtwoord) = Explode(";",$_COOKIE['adpan_login']); 
 
		if($gebruiker = $cfg['instel']['adminuser'] && $wachtwoord = md5($cfg['instel']['adminpass']))
		{
		$_SESSION['ingelogd'] = true; Return True;
		}
	}
	else
	{
	return false;
	}
}
?>
<?
if(!Controleer_ingelogd())
{
	if(!isset($_POST['LogIn']))
	{
?>
<form name="frmlogin" method="POST">
<strong>Admin:inloggen</strong><br><br>
<table width="100%">
<tr>
<td width="25%"><img src="images/icon_mini_profile.gif">Gebruikersnaam :</td>
<td width="75%"><input type="text" name="gebruikersnaam"></td>
</tr>
<tr>
<td width="25%"><img src="images/icon_mini_members.gif">Wachtwoord :</td>
<td width="75%"><input type="text" name="wachtwoord"></td>
</tr>
<tr>
<td><input type="submit" name="login" value="Log in"></td>
</tr>
</table>
</form>
<?
	}
	else
	{
            if($_POST['gebruikersnaam'] != $cfg['instel']['adminuser'] && $_POST['wachtwoord'] != $cfg['instel']['adminpass'])
		{
		$_SESSION['ingelogd'] = true;
		}
 
            setcookie("LogIn" , $_POST['gebruikersnaam'].";".md5($_POST['wachtwoord']) , time()+24*60*60*61 , "/" );
 
            echo "U bent succesvol ingelogd.<META http-equiv='refresh' content='2;url=\"?pagina=adminpanel/index\" />";
            }
            else
            {
            echo "Verkeerde logininformatie, u wordt teruggestuurd." ."<META HTTP-EQUIV=\"Refresh\" CONTENT=\"2;url=".$_SERVER['PHP_SELF']."\" />";
            }
      }
}
?>