PHP - One Page Login System

ok i need directing to a tutorial, an easyish one that can help me do a secure login and registration system. Something that uses sessions and mysql. something with sql injection and other security. i need it very secure.


hope you can help.

Hi could you help me get this login page working? I made a form which posts to login.php the "user" and "pass".   Then this is my code for login.php:

<?php include("mysql_connect.inc.php"); ?>

<?php
$user = $_POST['user'];
$pass = $_POST['pass'];

session_start();
$query = mysqli_query("SELECT * FROM users WHERE username='$user'");
$results = mysqli_query($con, $query) or die(mysqli_error($con));
$resultsarray = mysql_fetch_array($userresults);

if (isset($_POST['user']) && $_POST['user'] == $query && isset($_POST['pass']) && $_POST['pass'] == $query) {
$_SESSION['username'] = $_POST['user'];
echo "<p>Login success. You are logged in as: " . $_SESSION['username'] . "</p>Return to mainpage, click <a href='index.php'>here</a>!";
} else {
echo "<p>Wrong username or password.</p>";

}
mysqli_close($con);
?>

I've abandoned my old script and switched to this one: http://www.evolt.org/node/60384

I got it working on my site just fine (djsmiley.net/members/register - you can test it out if u want). i just want to know how i can put all of the code into the pages i created using my template.

It doesn't specify how this can be done in the tutorial, which is why im confused. I've tried everything but keep getting errors. Help?

Hi All!   This is my first post here, so if there are some things I miss or something more I need to do please let me know.   I tried searching the forum for the answer first but could not find anything.   So here is the thing; I followed a tutorial I found about building a login system for my website. The tutorial worked perfectly, except I needed it to redirect to a user specific page instead of a static page on login. I made the necessary changes to the script, and now it redirects to the user specific page, but does not recognize that I am logged in so it will not show me the content.   In the interest of full disclosure, I am not very good at PHP and lack a fundamental understanding of it. I am enrolled in some Udemy courses to try to rectify that, but I needed the login system ASAP, so copy and paste programming was my only option. I know, I know. I am a terrible human being and should be thrown into the sun. I agree. I am in counseling to try to deal with it.   The tutorial I used can be found he  http://www.wikihow.c...n-PHP-and-MySQL.   Here is the relevant code:   process_login.php:  

<?php


include_once 'db_connect.php';
include_once 'functions.php';


sec_session_start(); // Our custom secure way of starting a PHP session.


if (isset($_POST['email'], $_POST['p'])) {
    $email = $_POST['email'];
    $password = $_POST['p']; // The hashed password.


$page = login($email, $password, $mysqli);
if ($page == true) {
  // Login success        
  header('Location: '. $page);
   exit();


    } else {
        // Login failed 
        header('Location: ../error.php?error=1');
    }
} else {
    // The correct POST variables were not sent to this page. 
    echo 'Invalid Request';
}

Hi Everyone,

Just a quick question before I take on this project.

Basically the client has a secure server set up with folders for different clients. So they can store excel files, PDFs etc, What the client use to do was send the client an email with the http address of that clients particular folder to be able to login.

What my job is to create a login system that redirects each client to their particular area on the secure system.

Is this going to be difficult,

What I was thinking of doing was when the administator is setting up the client details there would be an extra field saying address: they paste the address of the folder on the server. Then it will redirect them to their folder.

Is this the correct way to do this.

Any help or advice would be great.

I'm trying to build a login system and alot of the code is similar to what i used to make my news cms. basically all i wanna accomplish right now is to get the user input inserted into my database. I've already tested it out, and I get no errors, but like with the cms, the database isn't getting queryed.

Here's the code:
(process.php)
Code: [Select]
<?php
 $first_name=$_POST['first_name']; 
 $last_name=$_POST['last_name']; 
 $age=$_POST['age']; 
 $city=$_POST['city']; 
 $state=$_POST['state']; 
 $country=$_POST['country']; 
 $zip=$_POST['zip']; 
 $birthdate=$_POST['birthdate']; 
 $gender=$_POST['gender']; 
 $sexuality=$_POST['sexuality']; 
 $race=$_POST['race']; 
 $religion=$_POST['religion']; 
 $status=$_POST['status']; 
 $about=$_POST['about']; 
 $website=$_POST['website']; 
 $user_name=$_POST['user_name']; 
 $password=$_POST['password']; 
 $email=$_POST['email']; 
 mysql_connect("your hostname", "your database name", "your password") or die(mysql_error()); 
 mysql_select_db("your database name") or die(mysql_error()); 
 
 $sql = sprintf("INSERT INTO Users (first_name, last_name, age, city, state, country, zip, birthdate, gender, sexuality, race, religion, status, about, website, user_name, password, email)
VALUES ('%s', '%s', '%s', '%s', '%s')",
mysql_real_escape_string($first_name),
mysql_real_escape_string($last_name),
mysql_real_escape_string($age),
mysql_real_escape_string($city),
mysql_real_escape_string($state),
mysql_real_escape_string($country),
mysql_real_escape_string($zip),
mysql_real_escape_string($birthdate),
mysql_real_escape_string($gender),
mysql_real_escape_string($sexuality),
mysql_real_escape_string($race),
mysql_real_escape_string($religion),
mysql_real_escape_string($status),
mysql_real_escape_string($about),
mysql_real_escape_string($website),
mysql_real_escape_string($user_name),
mysql_real_escape_string($password),
mysql_real_escape_string($email));
$result = mysql_query($sql); 
 
 
 Print "Congratulations! You are now a registered member on yourwebsite.com!"; 
 ?>
(register/index.php)
Code: [Select]
<script language = "Javascript">
 
function Validate()
{
    if (document.register.first_name.value == '')
    {
        alert('You have not specified your first name!');
        return false;
    }
if (document.register.last_name.value == '')
    {
        alert('You have not specified your last name!');
        return false;
    }
if (document.register.age.value == '')
    {
        alert('You have not specified your age!');
        return false;
    }
if (document.register.country.value == '')
    {
        alert('You have not entered a country!');
        return false;
    }
if (document.register.birthdate.value == '')
    {
        alert('You have not entered your date of birth!');
        return false;
    }
if (document.register.gender.value == '')
    {
        alert('You have not specified your gender!');
        return false;
    }
if (document.register.user_name.value == '')
    {
        alert('You have not entered a username!');
        return false;
    }
if (document.register.email.value == '')
    {
        alert('You have not entered an email!');
        return false;
    }
if (document.register.password.value == '')
    {
        alert('You have not entered a password!');
        return false;
    }
    return true;
}
</script>
      <form name="register" method="post" action="http://www.djsmiley.net/register/process.php" onsubmit="return Validate();">
                    <table width="100%" border="0">
                      <tr>
                        <td>First Name:</td>
                        <td><label>
                          <input type="text" name="first_name" id="first_name" />
                        </label></td>
                      </tr>
                      <tr>
                        <td>Last Name:</td>
                        <td><input type="text" name="last_name" id="last_name" /></td>
                      </tr>
                      <tr>
                        <td>Age:</td>
                        <td><input type="text" name="age" id="age" /></td>
                      </tr>
                      <tr>
                        <td>City:</td>
                        <td><input type="text" name="city" id="city" /></td>
                      </tr>
                      <tr>
                        <td>State:</td>
                        <td><input type="text" name="state" id="state" /></td>
                      </tr>
                      <tr>
                        <td>Country:</td>
                        <td><input type="text" name="country" id="country" /></td>
                      </tr>
                      <tr>
                        <td>Zip:</td>
                        <td><input type="text" name="zip" id="zip" /></td>
                      </tr>
                      <tr>
                        <td>Birthdate:</td>
                        <td><input type="text" name="birthdate" id="birthdate" /></td>
                      </tr>
                      <tr>
                        <td>Gender:</td>
                        <td><input type="text" name="gender" id="gender" /></td>
                      </tr>
                      <tr>
                        <td>Sexuality:</td>
                        <td><input type="text" name="sexuality" id="sexuality" /></td>
                      </tr>
                      <tr>
                        <td>Race:</td>
                        <td><input type="text" name="race" id="race" /></td>
                      </tr>
                      <tr>
                        <td>Religion:</td>
                        <td><input type="text" name="religion" id="religion" /></td>
                      </tr>
                      <tr>
                        <td>Marital Status:</td>
                        <td><input type="text" name="status" id="status" /></td>
                      </tr>
                      <tr>
                        <td>About You:</td>
                        <td><label>
                          <textarea name="about" id="about" cols="45" rows="5"></textarea>
                        </label></td>
                      </tr>
                      <tr>
                        <td>Website:</td>
                        <td><input type="text" name="website" id="website" /></td>
                      </tr>
                      <tr>
                        <td width="13%">Username: </td>
                        <td width="87%"><input type="text" name="user_name" id="user_name" /></td>
                      </tr>
                      <tr>
                        <td>Email: </td>
                        <td><input type="text" name="email" id="email" /></td>
                      </tr>
                      <tr>
                        <td>Password: </td>
                        <td><input type="password" name="password" id="password" /></td>
                      </tr>
                      <tr>
                        <td>&nbsp;</td>
                        <td><input name="Register Button" type="submit" class="Button1" id="Register Button" value="Register" />
                        <input name="Reset Button" type="reset" class="Button1" id="Reset Button" value="Clear" /></td>
                      </tr>
                    </table>
                    <label></label>
      </form>

Hi

What is the best way of handling a login system with sessions, I have read that you should never hold the password in a session, so what should you hold in the session in order to access a users data?

hi, I'm coding a website, after being away from php for a while, and there's this simple thing that's driving me crazy. I made a simple login system to test, and I have to refresh the page twice so it becomes active, and I can't figure out why. what's wrong with this code? (keep in mind that it's just a test, I plan to get username from database, send encrypted info to cookies, and all that, but after I get this working)

Code: [Select]
<?php
if (isset($_POST['submitlogin']))
{ if ((($_POST['username'])&&($_POST['password']))=="admin")
{ setcookie("user", "Administrator", time()+3600);
} else { $loginerror="1"; } }
if (isset($_GET['logout']))
{ setcookie("user", "", time()-3600); }
?>
<html>
<head>
</head>
<body>

<?php
if (isset($_COOKIE['user']))
{ echo "Hello, ".$_COOKIE['user'];
?>

<br /><a href="?logout=yes">Logout</a>

<?php }else{?>

<form action="" method="post">
<input name="username" type="text" /><br />
<input name="password" type="password" /><br />
<input name="submitlogin" type="submit" value="Login" />
</form>

<?php }?>

</body>
</html>

thanks for any help!

Hi, I made a login/register system and it was working fine, but now I seem to have broken it and I'm scratching my head as to why. I think it's something to do with the $_SESSION array, the error happens from going from the login.php page to members.php, I log in successfully, but when I get to the members page it says "you must be logged in".

index.php has the form to login or a link to register.php to make an account
Code: [Select]
<?php session_start(); ?>
<html>
<head>
<title>Lincs Crusade | Login page.</title>
</head>
<body>
<form action="login.php" method="POST">
Username:
<input type="text" name="username"><br />
Password:
<input type="password" name="password"><br />
<input type="submit" value="Login">
</form>
<a href="register.php">Click here to register!</a>
</body>
</html>

The register.php page
Code: [Select]
<?php
session_start();
echo "<h2>Register</h2>";
$submit = $_POST['submit'];
$username = strip_tags($_POST['username']); 
$password = strip_tags($_POST['password']);
$repeatpassword = strip_tags($_POST['repeatpassword']);
$email = $_POST['email'];
$date = date("Y-m-d");

if ($submit) { 
if ($username&&$password&&$repeatpassword&&$email) {
if ($password==$repeatpassword) {
if (strlen($username)>65) { 
echo "Length of username is too long!"; 
} elseif (strlen($email)>100) { 
echo "Length of email is too long!";
} elseif (strlen($password)>65||strlen($password)<8) {
echo "Password must be between 8 and 65 characters long!"; 
} else {
include('functions.php'); 
echo "All fields were accepted! ";
$password = md5($password);
$repeatpassword = ($repeatpassword);
$email = md5($email);
connect(); 
mysql_query(" 
INSERT INTO users VALUES ('','$username','$password','$email','$date') 
") or die("Could not insert values into <em>users</em> table!");
mysql_query("
INSERT INTO stats VALUES ('$username',10,10,0,1)
") or die("Could not insert values into <em>stats</em> table!");
$_SESSION['username'] == $username;
die("You have been registered! Please return to <a href=\"index.php\">homepage</a> and login."); 
}
} else {
echo "Your passwords do not match!";
}
} else {
echo "Please fill in <em>all</em> fields!";
}
 
}
?>
<html>
<head>
<title>Lincs Crusade | Register an Account.</title>
</head>
<body>
<form action="register.php" method="POST">
<p>Your username:</p>
<p>Note: Do not use your real name.</p>
<input type="text" name="username" value="<?php echo $username ?>"/>=
<p>Choose a password:</p>

<input type="password" name="password" />
<p>Please repeat password:</p>
<input type="password" name="repeatpassword" />
<p>Your student email:</p>
<p>Note: This is only used for recovering a lost or forgotten password.</p>
<input type="text" name="email" /><br />
<input type="submit" value="Register" name="submit" />
<p>
Note: Your password and email are md5 encrypted. This means neither I (the author) or anyone else will be able to view your information<br />
in plain text. For example, your password or email will look something like this "534b44a19bf18d20b71ecc4eb77c572f" once it has been encrypted.
</p>
</form>
</body>
</html>

The login.php page that process the form data to access members.php page
Code: [Select]
<?php
session_start();
$username = $_POST['username'];
$password = $_POST['password'];
if ($username&&$password) {
include('functions.php');
connect();
$query = mysql_query("SELECT * FROM users WHERE username='$username'");
$numrow = mysql_num_rows($query); 
if ($numrow!=0) { 
while ($row = mysql_fetch_assoc($query)) {
$dbusername = $row['username'];
$dbpassword = $row['password'];
}
if ($username==$dbusername&&md5($password)==$dbpassword) { 
echo "You're in! - <a href=\"members.php\">Proceed to the members page</a>";
$_SESSION['username'] == $username; 
} else {
echo "Incorrect password!";
}
} else {
die ("That user doesn't exist,<a href=\"register.php\">please register an account</a>");
}
} else {
die("Please enter a username and password!");
} 
?>

The members.php page
Code: [Select]
<?php 
session_start();
?>
<html>
<head>
<title>Lincs Crusade | Members page.</title>
</head>
<body>
<?php
if ($_SESSION['username']) {
echo "Welcome," .$_SESSION['username']. "!<br />";
echo "<a href=\"stats.php\">View your stats.</a>";
} else {
die ("You must be logged in.");
}
?>
</body>
</html>

and this is what is in the functions.php file
Code: [Select]
<?php
function connect() {
    mysql_connect("localhost","root","password") or die ("Unable to connect");
mysql_select_db("database") or die ("Unable to find database");
}
?>

Thanks for your help.

Hey all,
    I'm in the process of developing a PHP login system for the website of a team I'm involved with. I have a MySQL database already set up to hold user data, but I lack the knowledge to create a respectably secure login system. I tend to be a tad obsessive when it comes to security, and seeing different systems being implemented on various tutorials that cover this topic makes me cynical of the integrity of any of them. So, my question is: how can I create a secure login system that isn't too complex in implementation? Are there any reliable tutorials for this? Would some sort of system that uses session variables be what I'm looking for? I don't require excessive security, but privelidges gained if this system is compromised would be no small matter.

Thanks for any help.

I am using a login system in php and mySQL but only one page is potected.

pages i am using:
1. login.php // inputing details (user name, password)
2. checkloginDetails.php // connect to db and check login details
3. logged_in.php // successfully login

...i need more than the one page protected for example; once the user has logged in there will be the main logged in page with other links, remove topics, add, user, remove user all these pages i want protecting but with out the user inputing his details again.

Has anyone got an idear onhow i ould achive this?
 

I tried Googling them and what not but all I could find was useless stuff that I couldn't get to work, so I thought I would give it a crack at making my own. I don't think its that secure though. Can someone have a geeza over it? I've pretty much made it up from bits and pieces I have seen and researched. Ignore the echoes they were just for testing.

Well the code was working, now it just keeps redirecting me to index. So I dunno what I fucked.

Heres all the code:
Index.php
Code: [Select]
<!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=utf-8" />
<title>Untitled Document</title>
</head>

<body>
<?php 
include 'functions.php';
Connect();
?>
<form method="post" action="login.php">
<input type="text" name="Username" />
<input type="password" name="Password" />
<input type="hidden" name="ip" value="<?php ipget(); ?>" />
<input type="submit" />
</form>
</body>
</html>
Login.php
<?php
require_once 'standalone\HTMLPurifier.standalone.php';
include "functions.php";
Connect();
$purifier = new HTMLPurifier();
$result = mysql_query("SELECT Username, Password FROM login ") or die(mysql_error());
$sorted = mysql_fetch_array($result);
$name = $purifier->purify(strtolower($_POST['Username']));
$pass = $purifier->purify(md5(strtolower($_POST['Password'])));
$ip = md5($_POST['ip']);
$stamp = date("Ymdhis");

 

if ( $name == $sorted['Username'] ){
Echo "Username Correct";
if ( $pass == $sorted['Password'] ) {
echo "Password is correct";
session_start();
$_SESSION['ip'] = $ip;
$_SESSION['Username'] = $name;
$_SESSION['Password'] = $pass;
setcookie('ip', $ip, time()+3600);
setcookie('name', $name, time()+3600); 
$ipb = $_SERVER['REMOTE_ADDR'];
$orderid = "$stamp-$ipb";
$orderid = str_replace(".", "", "$orderid");
$GUID = md5(orderid);
setcookie('GUID', $GUID, time()+3600);
mysql_query("UPDATE login SET GUID = $GUID WHERE Username = '$name'");
header("location: admin.php");
} else {
echo "password is wrong";
}
} else {
Echo "wrong name";
}

?>


Functions.php
<?php
function connect(){
mysql_connect("localhost", "test", "password") or die(mysql_error());
mysql_select_db("db344475103") or die(mysql_error());
echo "Connected";
}
function ipget(){
$ip = $_SERVER['REMOTE_ADDR'];
echo $ip;
}
function check(){
session_start();
if (md5($_SERVER['REMOTE_ADDR']) == $_SESSION['ip'])
{
if (md5($_SERVER['REMOTE_ADDR']) == $_COOKIE['ip'])
{
if ($_SESSION['Username'] == $_COOKIE['name'])
{
if ($_COOKIE['GUID'] == mysql_query("SELECT GUID FROM login")) {
} else {
header("location: index.php");
session_destroy();
}
} else {
header("location: index.php");
session_destroy();
}
} else {
header("location: index.php");
session_destroy();
}
} else {
header("location: index.php");
session_destroy();
}
}
function clean(){
}
?>

Admin.php
Code: [Select]
<?php
include 'functions.php';
check();
?>
<!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=utf-8" />
<title>Untitled Document</title>
</head>

<body>
Admin Area
</body>
</html>
Yeah its a lot of code, probably most of it useless as well knowing me.

Hello:

I am using this tutorial to make a secure login system (if there is a "better" way, please let me know):

http://tinsology.net/2009/06/creating-a-secure-login-system-the-right-way/

I am having a problem with the login form - it keeps moving to the "a_Home.php" page (the one that is suppose to be password protected) without any login information being entered.

This is the mmLogin.php page:
Code: [Select]
<?php

include('../include/myConn.php');
include('include/myAdminCodeLib.php');

session_start();
$username = $_POST['username'];
$password = $_POST['password'];

$username = mysql_real_escape_string($username);
$query = "SELECT password, salt
        FROM users
        WHERE username = '$username';";
$result = mysql_query($query);
if(mysql_num_rows($result) < 1)
{
    header('Location: mmLogin.php');
    die();
}
$userData = mysql_fetch_array($result, MYSQL_ASSOC);
$hash = hash('sha256', $userData['salt'] . hash('sha256', $password) );
if($hash != $userData['password'])
{
    header('Location: mmLogin.php');
    die();
}
else
{
    validateUser();
    header('Location: a_Home.php');
}

?>

<html>

<head></head>

<body>
<form name="login" action="mmLogin.php" method="post">
    Username: <input type="text" name="username" />
    Password: <input type="password" name="password" />
    <input type="submit" value="Login" />
</form>
</body>

</html>


This is the a_Home.php page:
Code: [Select]
<?php

include('include/myAdminCodeLib.php');
include('include/myCheckLogin.php');

?>

<html>

<head></head>

<body>

<a href="mmLogin.php">Log Off</a>

</body>

</html>


This is the myCheckLogin.php page:
Code: [Select]
<?php
session_start();
if(!isLoggedIn())
{
    header('Location: mmLogin.php');
    die();
}
?>

This is the myAdminCodeLib.php page:
Code: [Select]
<?php

function validateUser()
{
    session_regenerate_id ();
    $_SESSION['valid'] = 1;
    $_SESSION['userid'] = $userid;
}

function isLoggedIn()
{
    if(isset($_SESSION['valid']) && $_SESSION['valid'])
        return true;
    return false;
}

function logout()
{
    $_SESSION = array();
    session_destroy();
}

?>


Can anyone tell me why this is not working?

And, am I calling the functions properly?

Thanks.

Hello everyone,

I'd like to make a small object oriented login system. The problem is that I'm not very good at oop and i have only written these scripts the procedural way.

So please, correct me if I'm wrong:

class database
- connect()
class user
- login()

My problem is when i make a database connection in connect(), I can't use it in login().

class Database{

public function connect(){
$mysqli = new mysqli('localhost','root','','login');
}
}

class User{

public function login(){
// how do i use connect() from above and make a query to log the user in?
}