Simple PHP login system

dennell · #1 (**permalink**) 01-26-06, 08:24 AM

Hi there i was just wondering whether someone could help me with a little php.

I want to create a small yet simple PHP based login system, where by when a user logs in depeding on their username and password will be directed to a different webpage.
So if the username and password is "jimmy" and "password" they will then be directed to jimmy.php

or
If the username was "sarah" and "password" then she would be redirected to sarah.php.

This system will not be a large system, and will only have like 4 users so i dont think a backend mysql database will be needed for the users!

Is this possible

Nico · #2 (**permalink**) 01-26-06, 09:13 AM

I was bored and wrote one quick.

Save this as "login.php". You can add as much users as you want. Just use a higher number than the previous between the "[" and "]".

PHP Code:


			
<?php

session_start();



if (isset($_SESSION["user"])) {



    header("Location: ". $_SESSION["user"] .".php");

}





$username[1] = "nico";

$password[1] = "nico";



$username[2] = "sarah";

$password[2] = "sarah";



$username[3] = "jimmy";

$password[3] = "jimmy";



$post_user = $_POST["user"];

$post_pass = $_POST["pass"];





if (isset($_POST["Submit"])) {

    

    $nr = 1;



    while (isset($username[$nr])) {

    

        if (($username[$nr] == $post_user) && ($password[$nr] == $post_pass)) {

            

                if (file_exists($username[$nr]. ".php")) {

                

                    $_SESSION["user"] = $username[$nr];

                    

                    header("Location: ". $username[$nr] .".php");

                    

                } else {

                

                    die("Cannot open userpage");

                    

                }

            

        }

        

         $nr++;

         

    }

    

}

    

?>

<!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>Log in</title>



</head>



<body>

<?php

if (isset($_GET["logout"])) {



    echo "Successfully logged out!";

    

}

?>

<form action="" method="post" name="login" id="login">

  <p>

    <input name="user" type="text" id="user"> 

  username</p>

  <p>

    <input name="pass" type="password" id="pass"> 

    password</p>

  <p>

    <input type="submit" name="Submit" value="Submit">

  </p>

</form>

</body>

</html>

And this as "logout.php"

PHP Code:


			
<?php

session_start();



if (!$_SESSION["user"]) {

    

    header("Location: login.php");

    

} else {



    unset($_SESSION["user"]);

    

    session_destroy();

    

    header("Location: login.php?logout=1");

    

}



?>

And this as userpage. "sarah.php" for example. Or whatever you used as username

PHP Code:


			
<?php

session_start();



if (!$_SESSION["user"]) {



    header("Location: login.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>User page</title>



<script type="text/javascript">



function LogOut() {



    var answer = confirm("Are you sure you want to log out?");

    

        if (answer != 0) {

        

            window.location = "logout.php";

        

        }

        

}



</script>





</head>



<body>

<p>You are logged in as &quot;<?php echo $_SESSION["user"] ?>&quot;</p>

<p><a href="javascript:LogOut();">Click here to log out </a></p>

</body>

</html>

Hope this helps!

Oh, one last thing. Make sure all files are in the same directory!

umesh · #3 (**permalink**) 02-26-06, 12:54 AM

i thank u both for posting as well giving the perfect solution