$username = $_POST['uname'];
$firstname = $_POST['fname'];
$lastname = $_POST['lname'];
$email = $_POST['email'];
$password = md5($_POST['pswd']);
$confirmpassword = md5($_POST['confpswd']);
$phone = $_POST['phone'];
$dateofbirth = $_POST['dob'];
$address = $_POST['address'];
$city = $_POST['city'];
$state = $_POST['state'];
$postcode = $_POST['code'];
$country = $_POST['country'];

$insert = ‘INSERT INTO user_reg(id, uname, fname, lname, email, pswd, confpswd, phone, dob, address, city, state, code, country)
VALUES (“‘.$username.’”, “‘.$firstname.’”, “‘.$lastname.’”, “‘.$email.’”; “‘.$password.’”; “‘.$confirmpassword.’”; “‘.$phone.’”;
“‘.$dateofbirth.’”; “‘.$address.’”; “‘.$city.’”; “‘.$state.’”; “‘.$postcode.’”; “‘.$country.’”)’;

mysql_query($insert);

Cheers!

how about validating forms when you have to check whether the form contains only alphanumeric characters or not ? or checking if the password field matches the confirm password field, etc.