<?php
// register.php
include("./Header.php"); // make Header.php include your mysql database connect
if(!$_POST['submit']){
echo "<form method=\"post\">";
echo "Username <input type=\"text\" name=\"username\"> <br>";
echo "Password <input type=\"password\" name=\"password\"><br>";
echo "<input type=\"submit\" name=\"submit\">";
}else{
$username = $_POST['username'];
$password = $_POST['password'];
if(!$username){
die("You need to specify a username.");
}
if(!$password){
die("You need to specify a password.");
}
// mysql insert here

}
?>