Loging Script

It seems there is something wrong with my script for the reason that
it always returns, UserName NOT found . I know it connects to the db
fine because I don't get a error. So just been trying to figure out
what's wrong. I am using PEAR btw.

Pastebin: http://pastebin.ca/360410


<?PHP

require 'DB.php';


$db = DB::connect('mysql://lol:lol@localhost/user');

if (DB::isError($db)) {die('ERROR{1}: ' . $db-
getMessage()); }else{print "We connected";}

$user = $_POST['user'];
$password = md5($_POST['password']);
$password2 = md5($_POST['password2']);

$sql = check();



function check()
{
global $db;
global $user;


$rows = $db->getAll('SELECT user_name FROM user');
if (DB::isError($db)) {die('ERROR{2}: ' . $db->getMessage());}



if($user){
if(array_key_exists("$user", $rows)){print "<p><b>UserName
AcceptED</b>";}else{print "<p><b>UserName NOT found</b>";}

}else{print "<p>no username was typed";}

}

?>

.

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