<?php
include("global.php");

$tbl_name="users"; // Table name

// username and password sent from form
$username=$_POST['username'];
$password=$_POST['password'];

// To protect MySQL injection (more detail about MySQL injection)
$username = stripslashes($username);
$password = stripslashes($password);
$username = mysql_real_escape_string($username);
$password = mysql_real_escape_string($password);

$sql="SELECT * FROM $tbl_name WHERE username='$username' and password='$password'";
$result=mysql_query($sql);

$count=mysql_num_rows($result);

if($count==1){
session_register("username");
session_register("password");
header ("location: me.php");
}
else {
echo "Wrong Username or Password";
}
?>