<?php

$servername = "localhost";
$username = "root";
$password = "usbw";
$database = "website0001";

  //Start the Session
session_start();
//3. If the form is submitted or not.
//3.1 If the form is submitted
if (isset($_POST['Username']) and isset($_POST['Password'])){
//3.1.1 Assigning posted values to variables.
$username = $_POST['Username'];
$password = $_POST['Password'];
//3.1.2 Checking the values are existing in the database or not
$query = "SELECT * FROM `logintest` WHERE Username='$username' and Password='$password'";

$result = mysqli_query($connection, $query) or die(mysqli_error($connection));
$count = mysqli_num_rows($result);
//3.1.2 If the posted values are equal to the database values, then session will be created for the user.
if ($count == 1){
$_SESSION['Username'] = $username;
}else{
//3.1.3 If the login credentials doesn't match, he will be shown with an error message.
$fmsg = "Invalid Login Credentials.";
}
}
//3.1.4 if the user is logged in Greets the user with message
if (isset($_SESSION['username'])){
$username = $_SESSION['username'];
echo "Hai " . $username . "
";
echo "This is the Members Area
";
echo "<a href='logout.php'>Logout</a>";

}else{ echo"bye";}
//3.2 When the user visits the page first time, simple login form will be displayed.
?>