php mysql_fetch_assoc isn't working as expected
$username = trim(mysql_real_escape_string($username));
    $password = md5(trim(mysql_real_escape_string($password)));
    $query = "SELECT user_level FROM user WHERE username='$username' AND password='$password'";
    $result = mysql_query($query) or die('query did not go through');
    if($result!=false){
        echo 'result is not false!<br/>';
        while($row = mysql_fetch_assoc($result)){
        echo 'another output to test'.$row['user_level'].'<br/>';
        }
    }

$query = "SELECT user_level, username FROM user WHERE username='$username' AND password='$password'";

$query = "SELECT user_level, username FROM user WHERE username='$username' AND password='$password'";
echo $query;

while($row = mysql_fetch_assoc($result)){
   print_r($row);
    }

$query = "SELECT user_level FROM user WHERE username='$username' AND password='$password'";

while($row = mysql_fetch_assoc($result)){
    echo 'another output to test'.$row['user_level'].'<br/>';
}

while($row = mysql_fetch_array($result)){
    echo 'another output to test'.$row['user_level'].'<br/>';
}