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Editorial Team
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Asked: 2026-05-14T04:12:38+00:00

The code below gets the username/password and runs it thru the backend.php script. <?php

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The code below gets the username/password and runs it thru the backend.php script.

<?php session_start(); ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" 
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
    <script src="http://code.jquery.com/jquery-latest.js"></script>
    <script type="text/javascript">
        $(document).ready(function() {
            $("#login_form").submit(function() {
                var unameval = $("#username").val();
                var pwordval = $("#password").val();
                $.post("backend.php", { username: unameval, 
                password: pwordval }, function(data) {
                    $("#status p").html(data);
                });
                return false;
            });
        });
    </script>
    </head>
<body>
<?php
    if(isset($_SESSION['user_session'])) {
        print '<p>user '.$_SESSION['user_session'].' logged in</p>';
    } else { ?>
        <form id="login_form" method="post">
            <p>Username: <input type="text" id="username" name="username" /></p>
            <p>Password: <input type="password" id="password" name="password" /></p>
            <p><input type="submit" value="Login" /></p>
        </form>
        <div id="status">
            <p></p>
        </div> <?php
    }?>

</body>
</html>

It authenticates the user properly, but what I want it to is hide the form once successful.

Here is what the page looks like before the form is submitted: http://grab.by/3hoH

Here is the page after the form was successfully submitted: http://grab.by/3hoR

I think I need to run some javascript to check for success, then if success, do not display form, if !success, display form.

I am unsure on how to do that, if that is the case.

backend.php code

<?php
session_start();
ini_set('display_errors',1);
error_reporting(E_ALL);
require_once('adLDAP.php');
//header('Content-type: text/json');
$adldap = new adLDAP();

if(isset($_POST['username']) && isset($_POST['password'])) {
    $username = $_POST['username'];
    $password = $_POST['password'];  // associated password

    // connect to ldap server
    $authUser = $adldap->authenticate($username, $password);
    if ($authUser === true) {
        print "<p>authuser true</p>";
        $_SESSION['user_session'] = $username;

        if(isset($_SESSION['user_session'])) {
            print "<p>session is set</p>";
        }   
    }
    else {
      print "<p>User authentication unsuccessful</p>";
    }
}
?>
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1 Answer

  1. Editorial Team

    You need to check the response to see if the login succeeded, and, if it did, remove the login form.

    You can remove the login form by writing

     $('#login_form').remove();

    To check whether the login succeeded, you should change your server-side script to return a JSON object that indicates whether the login succeeded and contains a message.
    For example:

    { success: true, message: "You have successfully logged in" }
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