Database credentials
<?php
define('DB_SERVER', 'localhost');
define('DB_USERNAME', 'username');
define('DB_PASSWORD', 'password');
define('DB_DATABASE', 'database');
$db = mysqli_connect(DB_SERVER,DB_USERNAME,DB_PASSWORD,DB_DATABASE);
Lock.php
<?php
include('config.php');
session_start();
$user_check=$_SESSION['login_user'];
$ses_sql=mysqli_query($db,"select username from admin where username='$user_check' ");
$row=mysqli_fetch_array($ses_sql,MYSQLI_ASSOC);
$login_session=$row['username'];
if(!isset($login_session))
{
header("Location: login.php");
}
?>
Login.php
<?php
include("config.php");
session_start();
if($_SERVER["REQUEST_METHOD"] == "POST")
{
// username and password sent from form
$myusername=mysqli_real_escape_string($db,$_POST['username']);
$mypassword=mysqli_real_escape_string($db,$_POST['password']);
$sql="SELECT id FROM admin WHERE username='$myusername' and passcode='$mypassword'";
$result=mysqli_query($db,$sql);
$row=mysqli_fetch_array($result,MYSQLI_ASSOC);
$active=$row['active'];
$count=mysqli_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1)
{
session_register("myusername");
$_SESSION['login_user']=$myusername;
header("location: welcome.php");
}
else
{
$error="Your Login Name or Password is invalid";
}
}
?>
HTML code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Login Page</title>
<style type="text/css">
body
{
font-family:Arial, Helvetica, sans-serif;
font-size:14px;
}
label
{
font-weight:bold;
width:100px;
font-size:14px;
}
.box
{
border:#666666 solid 1px;
}
</style>
</head>
<body bgcolor="#FFFFFF">
<div><h3>Tutorial link <a href="">Click Here</a></h3></div>
<div style="font-weight:bold; margin-bottom:10px">Demo Login Details -> Username : <a href="#">test</a> Password : <a href="#">test</a></div>
<div align="center">
<div style="width:300px; border: solid 1px #333333; " align="left">
<div style="background-color:#333333; color:#FFFFFF; padding:3px;"><b>Login</b></div>
<div style="margin:30px">
<form action="" method="post">
<label>UserName :</label><input type="text" name="username" class="box"/><br /><br />
<label>Password :</label><input type="password" name="password" class="box" /><br/><br />
<input type="submit" value=" Submit "/><br />
</form>
<div style="font-size:11px; color:#cc0000; margin-top:10px"><?php echo $error; ?></div>
</div>
</div>
</div>
</body>
</html>
Logout.php
<?php
session_start();
if(session_destroy())
{
header("Location: login.php");
}
?>
Welcome.php
<?php
include('lock.php');
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Welcome </title>
</head>
<body>
<h1>Welcome <?php echo $login_session; ?></h1>
<h2><a href="www.wideskills.com">wideskills.com</a></h2>
<h2><a href="logout.php">Sign Out</a></h2>
</body>
</html>