<?php
session_start();

      $dbhost = "localhost";

      $dbuser = "root";

      $dbpass = "";

      $dbname = "php";

      mysql_connect("$dbhost", "$dbuser", "$dbpass");

      mysql_select_db("$dbname");



      $username = mysql_real_escape_string($_POST['username']);

      $password = mysql_real_escape_string($_POST['password']);




      $query = "SELECT * FROM users WHERE username='$username' AND password='$password'";


      $query = mysql_query($query);


   $rows = mysql_num_rows($query);

       if ($rows != 0)
       {
       echo "You have been successfully been logged in ";
       echo $username;

       $_SESSION['uname'] = $username;
       session_register('uname'); //I tried registering the session before setting it and after setting it



       }
  else
  die ("You have entered an incorrect username or password");


      ?>