nub

<?php

session_start();

$username = $_POST['username'];
$password = $_POST['password'];

if ($username&&$password)
{
  $connect = mysqli_connect("localhost", "root", "") or die("Nei mann");
  mysqli_select_db("spionlogin") or die (mysqli_error($connect)); //<<<<<------------ feil melding
//
//
//Warning: mysqli_select_db() expects exactly 2 parameters, 1 given in /Applications/XAMPP/xamppfiles/htdocs/test1/login.php on line 11
//
//

  $query = mysqli_query("SELECT * FROM UserName WHERE username='$username'");

  $numrows = mysqli_num_rows($query);

  if($numrows!==0)
  {
    while($row = mysqli_fetch_assoc($query))
    {
      $dbusername = $row['username'];
      $dbpassword = $row['password'];

    }

    if($username==$dbusername&&md5($password)==$dbpassword)
    {
        echo "Du er inne anton";
        $_SESSION['username'] = $username;
    }
    else
        echo "ditt password er feilm8 ";


  }
  else
      die("din bruker finnes ikke");
}
else
    die("vennligst skriv inn brukeren og passordet ditt anton");

?>