LOGIN

<?php
$host="localhost";
$username="root";
$password=""
$db_name="registrering";
$tbl_name="registrering";


mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// hora
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];
$encrypted_mypassword=md5($mypassword);

/*To protect MySQL injection (more detail about MySQL injection)*/
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);

$sql="SELECT * FROM registrering WHERE loginid='$myusername' and password='$encrypted_mypassword'";
$result=mysql_query($sql);

$count=mysql_num_rows($result);


if($count==1){

session_register("myusername");
session_register("mypassword");
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
?>