<?php
session_start();
if ( isset($_POST["Submit"]) ) {
    $username = $_POST["username"];
    $password = $_POST["password"];
    if ( authenticate($username, $password) ) {
        $_SESSION["access"] = "yes";
        include("menu.php");
    }
    else
        loginform();
}
else
    loginform();
//------------------------------------------------
function authenticate($username, $password) {
    
    if ( $username == "username" && $password == "password" ) {
        return true;
    }
    else
        return false;
}
//------------------------------------------------
function loginform() {
?>
<form name="login" action="" method="post">
	User name : <input type="text" name="username" /><br/>
    Password : <input type="password" name="password" /><br/>
    <input type="submit" name="Submit" value="Submit" /><br/>
</form>
<?php
}
?>

