Untitled

index.php

<?php
    $error = "";
    if(isset($_POST['username'],$_POST['password'])){

        /*** username & passwords ***/
        $user = array(
                        "user" => "admin",
                        "pass"=>"admin"
                );
        $username = $_POST['username'];
        $pass = $_POST['password'];
        if($username == $user['user'] && $pass == $user['pass']){
            session_start();
            $_SESSION['simple_login'] = $username;
            header("Location: home.php");
            exit();
        }else{
            $error = '<div class="alert alert-danger">Invalid Login</div>';
        }
    }
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Simple php login without database by php-gym.com</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">


    <link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet">
    <style type="text/css">
        body{padding-top:20px;}
    </style>
</head>
<body>

                    <h3 class="panel-title">Please sign in</h3>

                    <?php echo $error; ?>
                    <form accept-charset="UTF-8" role="form" method="post" action="index.php">
                        <fieldset>

                                <input placeholder="Username" name="username" type="text">

                                <input placeholder="Password" name="password" type="password" value="">

                                <input type="submit" value="Login">
                        </fieldset>
                    </form>

</body>
</html>

logout.php

<?php
    session_start();
    unset($_SESSION['simple_login']);
    header("Location: index.php");
?>

home.php

<?php
    session_start();
    if(!isset($_SESSION['simple_login'])){
        header("Location: index.php");
        exit();
    }

/*** you can  write your protected content here ***/

?>
<h1 align="center">Welcome, <?php echo $_SESSION['simple_login']; ?></h1>
<p align="center"><a href="logout.php">Logout</a></p>