welcome.php


<?php
//Header file upon successfull login
    require_once 'functions.php';

    if(!isset($_SESSION['username']) || empty($_SESSION['username'])){
        header("location: login.php");
        exit;
    }
    else{
        $name = $_SESSION["username"];
         echo "Welcome $name!!!";
    }
?>

<!DOCTYPE html>
<html lang="en">
 <!--Template for welcome page -->
<head>
    <meta charset="UTF-8">
    <title>Welcome</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css">
    <style type="text/css">
        body{ font: 14px sans-serif; text-align: center; }
    </style>
</head>
<body>
    <div class="page-header">
        <h1>Hi, <b><?php echo htmlspecialchars($_SESSION['username']); ?></b>. Welcome to my site.</h1>
    </div>
    <p>
        <a href="logout.php" class="btn btn-danger">Sign Out of Your Account</a>
        <a href="form.php" class="btn btn-primary">Fill up this form</a>
    </p>

</body>
</html>