PHP - Login Form Questions

Hi guys,

I'm currently in the process of creating a login form. I'm using PHP to check a simple text file called 'users.txt' for the username and password which has been entered in the form.

If the username and password are NOT in the 'users.txt' file, it will create them on a new line.
Like so:

Users.txt
Code: [Select]
ExampleUser,ExamplePass\n
Marc,password
Craig,password
John,password

Once I try to log into an account which is NOT there, it will create an account underneath. So if I try to log in with username as "Matthew" and password as "password" it will show like so:

Code: [Select]
ExampleUser,ExamplePass\n
Marc,password
Craig,password
John,password
Matthew,password

Hoping this makes sense so far, all of the above works.
However when I click back, to go back onto the login form, I try to log in with one of the usernames/passwords in the 'users.txt' file, and it will create the exact same user on a new line, so I have 2 of the same usernames/passwords.

What I want it to do it, if the username is in the 'users.txt' file, for it to display a message saying "Congratulations you're logged in".

Here is the code for the PHP login page.

P4 LoginScriptFile.php
Code: [Select]
<?php
//This checks for required fields from the form.
if ((!$_POST[username]) || (!$_POST[password]))
{
header("Location: P4 LoginForm.php");
exit;
}

//This reads values from the form.
$form_user = $_POST[username];
$form_password = $_POST[password];

$flag = FALSE;
$filename = "users.txt";
$fp = fopen( $filename, "r" ) or die ("Couldn't open $filename");
while ( ! feof( $fp ) ) {
$line = fgets( $fp);
$user = strtok($line, ","); //Username
$password = strtok(","); //Password
if (($form_user == $user) && ($form_password == $password)) 
{
$flag = TRUE;
}
}

if ($flag)
{
echo "<br>Congratulations, you're logged in";
}

else{
$filename = "users.txt";
$updateuser = $_POST ['username'];
$updatepass = $_POST ['password'];

$fp = fopen( $filename, "a" ) or die("Couldn't open $filename");
fwrite( $fp, "$updateuser,$updatepass\n") or die ("Couldn't write values to your file!");
fclose( $fp );
echo "<br>An account has been created for you!";
}
?>

I think what I need is to read the file once the new user has been created. Any help would be greatly appreciated.
Thanks in advance for any help.
gixxx

Hello, guys i hope you will help me with this cause i'm a complete newbie.
First 2 words about the goal :
I want to make a PHP script to autologin in one webpage and to get statistics in every 2 minutes. The account is mine so i dont want to scam or anything , just want to automate it cause this info i need in realtime, and refreshed often.
The page login page code looks like this :

Code: [Select]
<dl>
                    <dt>Username:</dt>
                    <dd><input type="text" name="user" size="20" value="" class="input_text" /></dd>
                    <dt>Password:</dt>
                    <dd><input type="password" name="passwrd" value="" size="20" class="input_password" /></dd>
                </dl>
                <dl>
                    <dt>Minutes to stay logged in:</dt>

                    <dd><input type="text" name="cookielength" size="4" maxlength="4" value="60" class="input_text" /></dd>
                    <dt>Always stay logged in:</dt>
                    <dd><input type="checkbox" name="cookieneverexp" class="input_check" onclick="this.form.cookielength.disabled = this.checked;" /></dd>
                </dl>
                <p><input type="submit" value="Login" class="button_submit" /></p>
and i try login like that :



Code: [Select]
$_login_url = 'URL of the login'; // url to login :)
$_user = 'myusername'; // username for login
$_pass = 'mypass'; // password..
$start = microtime(true);
    file_get_contents(
    $_login_url,
    false,
    stream_context_create(
        array(
          'http' => array(
            'method'  => 'POST',
            'header'  => 'Content-type: application/x-www-form-urlencoded',
            'content' => http_build_query(
            array(
                'user' => $_user,
                'passwrd' => $_pass,
                'cookielength' => '-1',
    //what here ???? 'Login',
               &nbsp;)
              ),
            )
          )
        )
    );
   
      $search['from'] = 'Set-Cookie: ';
      $search['to'] = ';';
      $cookie = array();
//the problem is that i cant login to go to the statistics page, cause site requires login for view.

I'm using a login form which allows me enter the pages as member only
the only thing that I need to do is to include the file safe.php and the user has to login in order to see the content of this page. so far so good.

if I use my subscription forms ( spread over 2 pages) the first page can be filled in properly however when I come to the second page (where I included the safe.php aswell I think I loose the session ID that I got after logging in the first time) I am redirected to the login page which I don't want. how can I avoid this?

this is the  content of safe.php
Code: [Select]
<?php
// Pagina: safe.php: Includen if you want te securise your page just add it at the top of your page
include("config.php");

if(isset($_SESSION['user_id'])) {
 // Inloggen correct, updaten laatst actief in db
 $sql = "UPDATE gebruikers SET lastactive=NOW() WHERE id='".$_SESSION['user_id']."'";
 mysql_query($sql);
}else{
 if(isset($_COOKIE['user_id'])) {
  $sql = "SELECT wachtwoord,status FROM gebruikers WHERE id='".$_COOKIE['user_id']."'";
  $query = mysql_query($sql);
  $rij = mysql_fetch_object($query);
  $dbpass = htmlspecialchars($rij->wachtwoord);
  $dbstatus = htmlspecialchars($rij->status);
  if($dbpass == $_COOKIE['user_password']) {
   $_SESSION['user_id'] = $_COOKIE['user_id'];
   $_SESSION['user_status'] = $dbstatus;
  }else{
   setcookie("user_id", "", time() - 3600);
   setcookie("user_password", "", time() - 3600);
   echo "Cookies incorrect. Cookies verwijderd.";
   header("Location: inloggen.php");
  }
 }else{
  header("Location: inloggen.php");
 }
}
?>

Right I'm going to try and explain what i'm trying to do and i'll post the code i have at the bottom.  Whatever I do I seem to get a new error and I can't get any closer to getting the script right!!!  I give up myself.  There's only so much one man can take!!!!!!!

I have a database with two table.   

Members
owners

Both tables have the same fields for the login section!
username
password (stored in md5 format)
access_level


Now I'm trying to make a script that selects both tables and finds the username.  then checks that the md5 of the password entered into the field is equal to the stored md5 password in the database.

if details are correct it sends the person to the correct page while updating a table called mem_logins with the email of the user loging in as a feild along with the time,
If there is no account at all it sends them to the create account page,
if the access level is equal to 1 or 50 it sends them to the check_email.php

Now I'm very new to php and therefore have most certainly written the script wrong.  I have been tryig to sort the errors for days and now, have given up.  Can anyone help?  Here is the code as it stands and at the minute im getting this error.....

mysql_num_rows(): supplied argument is not a valid MySQL result resource in site on line 11

<?php
include('Connections/YA1.php');
session_start();

?>
<?php
if(isset($_POST['submit3'])) {

$qCheckUserInfo = "SELECT * FROM Members, owners WHERE username='".mysql_real_escape_string($_POST['username3'])."'";
$rCheckUserInfo = mysql_query($qCheckUserInfo);
$numUsers = mysql_num_rows($rCheckUserInfo);

if($numUsers == 0) {
$message = "Incorrect login details";
$success = 0;
}
else {
$userInfo = mysql_fetch_array($rCheckUserInfo);
$password = $userInfo['password'];
$email = $userInfo ['email'];
if($password == md5($_POST['password3'])) {
$success = 1;
$_SESSION['logged'] = 1;
$_SESSION['club_id'] = $userInfo['club_id'];
$_SESSION['username'] = $userInfo['username'];
$today = date("Y-m-d h:m:s");




if($_SESSION['access_level'] == 1) {

 $sql = "INSERT INTO mem_logins `email`, `login` VALUES ('$email','$today')";
 mysql_query($sql) or die ("could not execute insert.");
 
header('Location: check_email.php');
}
else if($_SESSION['access_level'] == 2) {
 $sql = "INSERT INTO mem_logins `email`, `login` VALUES ('$email','$today')";
 mysql_query($sql) or die ("could not execute insert.");
 
header('Location: members/index.php');
}
else if($_SESSION['access_level'] ==50) {
 $sql = "INSERT INTO mem_logins `email`, `login` VALUES ('$email','$today')";
 mysql_query($sql) or die ("could not execute insert.");
 
header('Location: check_email.php');
}
else if($_SESSION['access_level'] == 51) {
  $sql = "INSERT INTO mem_logins `email`, `login` VALUES ('$email','$today')";
 mysql_query($sql) or die ("could not execute insert.");
 
header('Location: clubs/index.php');
}
else if($_SESSION['access_level'] == 99) {
  $sql = "INSERT INTO mem_logins `email`, `login` VALUES ('$email','$today')";
 mysql_query($sql) or die ("could not execute insert.");
 
header('Location: admin/D/index.php');
}
}
else {
$message = "Incorrect login details";
$success = 0;
}
}

}
?>

<body>
<div id="wrapper">
<div id="title_box">
  <div id="logo"><img src="image/your_arena.jpg" /></div>
  <div id="login_box">
  <?php if($success==0) {
echo $message;
}
else {
echo '&nbsp;';
} ?>
              <?php
if($success != 1 && !($_SESSION['logged'])) {
?><?php

?>
  <form   METHOD="POST" name="login_form" class="black_text" id="login_form">
  <table width="252" border="0" align="right" cellpadding="0" cellspacing="5" id="login_tab">
  <tr>
    <td width="84"><div align="left">Username:</div></td>
    <td><input name="username3" type="text" class="form_fields" value="<?php echo $_POST['username3']; ?>" id="username3" tabindex="1" /></td>
  </tr>
  <tr>
    <td><div align="left">Password:</div></td>
    <td><input name="password3" type="password" class="form_fields" id="password3" tabindex="2" /></td>
  </tr>
  <tr>
    <td colspan="2"></td>
    </tr>
  <tr>
    <td colspan="2" class="forgotten_pass"><div align="right">Forgotten your password?</div></td>
  </tr>
  <tr>
    <td height="24"><div align="left"></div></td>
    <td><div align="right">
      <input name="submit3" type="submit" id="submit3" tabindex="3" value="Login" />
    </div></td>
  </tr>
</table>

   <?php
} //end fail if
?>
  </form>
  </div>
</div>
<?php include('nav.php');?>


<div id="test">main page </div>

<?php include('footer.php');?>
</div>
</body>
</html>

I'm always getting the "Falha ao selecionar o usuario no banco de dados." error. Why??? Another thing, any tip to improve my code? A way to do the same thing, but with a "more clean" code...

login.php
Code: [Select]
<?php

session_start();



require_once('../includes/link.php');
include('../functions/clean.php');



$errmsg_arr = array();

$errflag = false;



$email = clean($_POST['email']);

$password = clean($_POST['password']);



if(($email == '') OR ($password == '')) {

$errmsg_arr[] = 'Por favor, preencha todos os campos.';

$errflag = true;
$_SESSION['ERRMSG_ARR'] = $errmsg_arr;

session_write_close();

header("location: ../index.php");

exit();

}





$query = "SELECT * FROM users WHERE email = '$email' AND passwd = '".md5($_POST['password'])."'";

$result = mysql_query($query);

$user = mysql_fetch_assoc($result);

if($result) {

if(mysql_num_rows($result) == 1) {
$user = mysql_fetch_assoc($result);

session_regenerate_id();

$_SESSION['SESS_ID'] = $user['id'];
$_SESSION['SESS_STATUS'] = $user['status'];

$_SESSION['SESS_SCHOOL_ID'] = $user['school_id'];

$_SESSION['SESS_CLASS_ID'] = $user['class_id'];

$_SESSION['SESS_NAME'] = $user['name'];

$_SESSION['SESS_REGISTRATION'] = $user['registration'];

$_SESSION['SESS_EMAIL'] = $user['email'];

session_write_close();

if($_SESSION['SESS_STATUS'] == 1) {
header("location: ../users/superadministrator/index.php");

exit();
}

} else {

$errmsg_arr[] = 'Suas informacoes de login estao incorreta. Por favor, tente novamente.';

$errflag = true;

$_SESSION['ERRMSG_ARR'] = $errmsg_arr;

session_write_close();

header("location: ../index.php");

exit();

}



} else {

die("Falha ao selecionar o usuario no banco de dados.");

}

?>
link.php
Code: [Select]
<?php

define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASSWORD', '');
define('DB_DATABASE', 'social_escola');

$link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);

if (!$link) {
die('Falha ao conectar ao servidor: ' . mysql_error());
}

$db = mysql_select_db(DB_DATABASE);

if (!$db) {
die('Falha ao selecionar o banco de dados: ' . mysql_error());
}

?>
clean.php
Code: [Select]
<?php

function clean($str) {

$str = @trim($str);

if(get_magic_quotes_gpc()) {
$str = stripslashes($str);
}

return mysql_real_escape_string($str);
}

?>

I created a login form for my system and I don't sure that it's enought for security to protect my website?

 include("database.php");
   session_start();
   
   if($_SERVER["REQUEST_METHOD"] == "POST") {
      // username and password sent from form 
      
      $stmt = $conn->prepare("SELECT Sale_ID FROM tb_sales WHERE Login_Name = ? AND Login_Password = ? LIMIT 1");
      $stmt->bind_param("ss", $_POST['username'], $_POST['password']);

      $stmt->execute();
      $res = $stmt->get_result(); 
     
  
      $count = mysqli_num_rows($res);
      
      if($count == 1) {
        // session_register("myusername");
         $_SESSION['login_user'] = $_POST['username'];
         echo "Login Succcess";
         //header("location: index.php");
      }else {
         echo "Your Login Name or Password is invalid";
      }
   }

 

when I test this script on browser.  This is all that I see.

invalid username or password


Code: [Select]
<?php

//start session
session_start();

include 'functions.php';

if (loggedin())
{
header("Location: userarea.php");
exit();

}
if ($_POST['login'])
{
//get data

$username = $_POST['username'];
$password = $_POST['password'];
$rememberme = $_POST['rememberme'];
}

if (username&&$password)
{

$login = mysql_query("SELECT * FROM users WHERE username='$username'");
while ($row = mysql_fetch_assoc($login))
{
$db_password = $row['password'];
if (md5($password)==$db_password)
$loginok =TRUE;
else
$loginok = FALSE;

if ($loginok ==TRUE);
{

if($rememberme=="on")
setcookie("username",$username, time()+7200);
else if ($rememberme=="")
$_SESSION['username']=$username;

header("Location: userarea.php");
exit();
}

}
}
else
{
die("invalid username or password");
}

?>

<form action="login.php" method="POST">
username:<br />
<input type="text" name="username" /><br />
password:<br />
<input type="password" name="password" /><br />
<input type="checkbox" name="rememberme">remember me<br />
<input type="submit" name="login" value="Log in" />
</form>

In my login form I'm getting the error
Code: [Select]
Notice: Use of undefined constant Errors - assumed 'Errors' in /home/content/n/a/t/nathanwatson/html/admin/YBK/post.php on line 91

Warning: Cannot modify header information - headers already sent by (output started at /home/content/n/a/t/nathanwatson/html/admin/YBK/post.php:91) in /home/content/n/a/t/nathanwatson/html/admin/YBK/post.php on line 91

Warning: Cannot modify header information - headers already sent by (output started at /home/content/n/a/t/nathanwatson/html/admin/YBK/post.php:91) in /home/content/n/a/t/nathanwatson/html/admin/YBK/post.php on line 92



 //if the name exists it gives an error
 if ($check2 != 0) {  //Line 85
  $error="<span style=";
$error .="color:red";
$error .=">";
  $error .= "Sorry, the username is already in use.";
  $error .="</span>";
  setcookie(Errors, $error, time()+20);  //Line 91
header('Location: /YBK/');   //Line 92
exit;
  }

Hello,   i got a problem with a part of my code :   <?php

Hello guys, first post here. I have a web system which contains a login form programmed in 3 different languages HTML, PHP and JS. The problem is that it's not working, you can access without entering any data, you just press enter and it will work, I don't know why it is not validating any credentials. I was thinking about some query problems but I don't know. I am a newbie on this. I have read a lot but haven't found an answer. A friend helped me build the system but left that uncompleted and he's nowhere to be found. I was wondering if you could help me out with this.

<form role="form" ng-submit="login(user,password)">
  <div class="form-group">
    <input type="user" class="form-control" ng-model='user' placeholder="Usuario">
  </div>
  <div class="form-group">
    <input type="password" class="form-control" ng-model='password' placeholder="Contraseña">
  </div>
  <div class="alert alert-warning" id='alert' style="display:none">Revise la informacion...</div>
  <div class="alert alert-danger" style="display:none" id='alertErr'>Error Usuario o Contraseña Erronea intentelo de nuevo</div>
  <button type="submit" class="btn btn-primary">Ingresar</button>
</form>
  

<?php
	require_once 'database.php';
	$db = new Database();
	$body = json_decode(file_get_contents('php://input'));
	$user =$db->query("SELECT * FROM usuario WHERE usua_login = '".$body->user."' AND usua_pass = '".$body->password."'");
	if($user == false){
		http_response_code(404);
	}
	else{
		http_response_code(200);
		echo json_encode($user);
	}
?>

'use strict';

/**
 * @ngdoc function
 * @name belkitaerpApp.controller:MainCtrl
 * @description
 * # MainCtrl
 * Controller of the belkitaerpApp
 */
angular.module('belkitaerpApp')
  .controller('MainCtrl', function ($scope,$http,$location) {


    	$scope.login = function(user,password){
    		console.log('Login...');
    		if(user =='' || password ==''){
    			$('#alert').show("slow");
             	
             	setTimeout(function() {
                	$('#alert').hide('slow');
           		 }, 3000);
    		}
    		else{
    			$http.post('../serverSide/login.php',{user:user,password:password}).success(function(data){
    				console.log('OK!');
    				$location.path('/products');	
    			}).error(function(data){
    				$('#alertErr').show("slow");
             	
             		setTimeout(function() {
                		$('#alertErr').hide('slow');
           			 }, 3000);
    			});
    		}
    	}
  });

Hey all,

I am trying to put a login form on the front pages (index, contact us, about us) of my site. I want the members to put in username and pass, and when they click submit, it takes them to the /members/ area of the site.

Right now this is how I have the form.

Code: [Select]
<form method="POST" action="login.php">
<input type="text" name="username">
<input type="password" name="password">
<input type="submit" value="Login">
</form>
I have this, but the members area consist of several pages and not just on location.

Code: [Select]
if ($_SESSION['authorized'] != true)
{
    header("Location: login_form.php");
    exit;
}
Finally, I am going to create a login.php page that has this in it.

Code: [Select]
$select_user =
mysql_query('select * from users where username = "' .
$_POST['username'] . '" and password = "' .
md5($_POST['password'] . '"'));

if (mysql_num_rows($select_user) != 0)
{
    session_start();
    session_register('authorized');
    $_SESSION['authorized'] = true;

    header("Location: protected_content.php");
    exit;
}
else
{
    header("Location: login_form.php");
    exit;
}


So My questions are, How can I make it so they can access the entire /members/ area (directory)

and what would I put in the database 'members' when I create it. All members are going to use the same username and pass. So there is only need for 1 query for username and 1 for password.

I appreciate anyone help in advance.

Hi

I'm a beginner and I would like to create a simple login form by using PDO connection.

I wrote all these codes but nothing happened. The only thing I know is my PDO connection is working.

Any help I appreciate that.

 login form:

 

<!DOCTYPE html>
<html>

<form method="post" action="loginaccess.php">
    <br>
    <br>
    Username <input type="text" name="username"> 
    <br>
    <br>
    Password <input type="text" name="password">
    <br>
    <br>
    <input value="submit" type="submit" name="submit">
    <br>
    <br>
    <br>
    <br>
    
    

</form>

<?php
    require 'Connection.php';

session_start();

    
    if(isset($_POST['submit'])) {
        $username = $_POST['username'];
        $password = $_POST['password'];
        
        $query = $conn->prepare("SELECT COUNT ('id') FROM 'users' WHERE 'username' = '$username' AND 'password' = '$password'");
        $query-> execute();
        
        $count = $query->fetchColumn();
        
        if ($count > "0"){
            $_SESSION['username'] = $username;
            
            header('location: panel.php');
        }
        else {
            
            echo "Wrong informations";
        }
    }

?>

</html>

   

Hi I am new to php and I have a login form for users that works ok with a mysql database table for users.
The problem I have is that it only takes all loggedin users to the same page and I want to take logged in users to their own page.
I should have no more than 5 users at anyone time and for example I will call them simply user1, user2, user3, user4 and user 5.
I want user1 to go to user1.php, user2 to go to user2.php and so on.
The login.php code is as follows, can someone please tell me in laymans terms how to change it to accommodate this:
Code: [Select]
<?php 
include 'dbc.php';

$err = array();

foreach($_GET as $key => $value) {
$get[$key] = filter($value); //get variables are filtered.
}

if ($_POST['doLogin']=='Login')
{

foreach($_POST as $key => $value) {
$data[$key] = filter($value); // post variables are filtered
}


$user_email = $data['usr_email'];
$pass = $data['pwd'];


if (strpos($user_email,'@') === false) {
    $user_cond = "user_name='$user_email'";
} else {
      $user_cond = "user_email='$user_email'";
    
}


$result = mysql_query("SELECT `id`,`pwd`,`full_name`,`approved`,`user_level` FROM users WHERE 
           $user_cond
AND `banned` = '0'
") or die (mysql_error()); 
$num = mysql_num_rows($result);

  // Match row found with more than 1 results  - the user is authenticated. 
    if ( $num > 0 ) { 

list($id,$pwd,$full_name,$approved,$user_level) = mysql_fetch_row($result);

if(!$approved) {
//$msg = urlencode("Account not activated. Please check your email for activation code");
$err[] = "Account not activated. Please check your email for activation code";

//header("Location: login.php?msg=$msg");
 //exit();
 }
 
//check against salt
if ($pwd === PwdHash($pass,substr($pwd,0,9))) { 
if(empty($err)){

     // this sets session and logs user in  
       session_start();
   session_regenerate_id (true); //prevent against session fixation attacks.

   // this sets variables in the session 
$_SESSION['user_id']= $id;  
$_SESSION['user_name'] = $full_name;
$_SESSION['user_level'] = $user_level;
$_SESSION['HTTP_USER_AGENT'] = md5($_SERVER['HTTP_USER_AGENT']);

//update the timestamp and key for cookie
$stamp = time();
$ckey = GenKey();
mysql_query("update users set `ctime`='$stamp', `ckey` = '$ckey' where id='$id'") or die(mysql_error());

//set a cookie 

   if(isset($_POST['remember'])){
  setcookie("user_id", $_SESSION['user_id'], time()+60*60*24*COOKIE_TIME_OUT, "/");
  setcookie("user_key", sha1($ckey), time()+60*60*24*COOKIE_TIME_OUT, "/");
  setcookie("user_name",$_SESSION['user_name'], time()+60*60*24*COOKIE_TIME_OUT, "/");
   }
  header("Location: myaccount.php");
 }
}
else
{
//$msg = urlencode("Invalid Login. Please try again with correct user email and password. ");
$err[] = "Invalid Login. Please try again with correct user email and password.";
//header("Location: login.php?msg=$msg");
}
} else {
$err[] = "Error - Invalid login. No such user exists";
  }
}
 
 

?>

I must be losing my marbles on this one:

I have a standard login form that queries my MySQL database for user info, but the problem doesn't even get that far.

Here's the form:
Code: [Select]
<div id="login_form">
<form action="access/" method="post">
<input type="text" name="username" class="username" /><br>
<input type="password" name="password" class="password" /><br>
<input type="submit" class="submit" value="">
</form>
</div>

Then the backend:

<?php
    echo '<pre>';
    print_r($_POST);
    echo '</pre>';

    //The rest of the validation is beyond here...
?>


Lets say in the db I have username = 'test' and password = 'test1234', when I enter the correct username and password the POST array displays blank:
Code: [Select]
array
 (
)

So then, I enter another entry, lets say I enter username = 'test' and password = 'test2468', but the mysql stays the same:
I get this:
Code: [Select]
array(
    [username] => test
    [password] => test2468
}

So then, because at this point i'm 98% sure i've lost my mind I go in and change the password in the DB to match the new entry.
So now mysql db says username = 'test' and password = 'test2468'
I try using that info again and voila:
Code: [Select]
array
(
)

Has anyone run into something similar to this, the info is not interacting with the database in any way at this point, yet it seems to be affecting it.

Thanks for any help you can offer, and for not thinking i'm crazy

E

I'm not sure where the issue really lies after the form submits it DOES perform the error messages if there is one, however if the username and password are atleast filled in and the user clicks Log In it doesn't do anything after that.   

login.php

<?php

/**
 * @author Jeff Davidson
 * @copyright 2010
 */

if (isset($_POST['submitted'])) {
    
    require_once ('inc/login_functions.php');
    require_once ('inc/dbconfig.php');
    list ($check, $data) = check_login($dbc, $_POST['username'], $_POST['password']);
    
    if ($check) { // OK!
    
    // Set the session data:.
    session_start();
    $_SESSION['id'] = $data['id'];
    $_SESSION['firstname'] = $data['firstname'];
    
    // Redirect:
    $url = absolute_url ('loggedin.php');
    header("Location: $url");
    exit();
    
    }else {
    // Unsuccessful!
    $errors = $data;
    }
    
    mysqli_close($dbc);
    
} // End of the main submit conditional.

include ('inc/login_page.php')

?>


login_functions.php

<?php

/**
 * @author Jeff Davidson
 * @copyright 2010
 */

// This page defines two functions used by the login/logout process.

/* This function determines and returns an absolute URL.
 * It takes one argument: the page that concludes the URL.
 * The argument defaults to index.php.

*/

function absolute_url($page = 'index.php') {
    // Start defining the URL...
    // URL is http://plus the host name plus the current directory:
    $url = 'http://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['PHP_SELF']);
    
    // Remove any trailing slashing:
    $url = rtrim($url, '/\\');
    
    // Add the page
    $url .= '/' . $page;
    
    // Return the URL:
    return $url;
    
} // End of absolute_url() function.


/* This function validates the form data (the username and password).
 * If both are present, teh database is queried.
 * The function requires a database connection.
 * The function returns an array of information, including:
 * - a TRUE/FALSE variable indicating success
 * - an array of either errors or the database result
 */
 
function check_login($dbc, $username = '', $password = '') {
    $errors = array(); // Initialize error array.
    
    // Validate the username
    if (empty($username)) {
        $errors[] = 'You forgot to enter your username.';
    } else {
        $u = mysqli_real_escape_string($dbc, trim($username));
    }
    
    // Validate the password:
    if (empty($password)) {
        $errors[] = 'You forgot to enter your password.';
    } else {
        $p = mysqli_real_escape_string($dbc, trim($password));
    }
    
    if (empty($errors)) { // If everythings OK.
        
        // Retrieve the firstname and lastname for the username/password combination:
        $q = "SELECT id, firstname FROM users WHERE username='$u' AND password=SHA('$p')";
        $r = @mysqli_query($dbc, $q); // Run teh query.
        
        // Check the result:
        if (mysqli_num_rows($r) == 1) {
            
            // Fetch the record:
            $row = mysqli_fetch_array($r, MYSQLI_ASSOC);
            
            // Return true and the record:
            return array(true, $row);
            
        }else { // Not a match!
        $errrors[] = 'The username and password entered do not match those on file.';
        }
    } // End of empty ($errrors) IF.
    
    // Return false and the errors:
    return array(false, $errors);
    
} //End of check_login() function.

?>


login_page.php

<?php

/**
 * @author Jeff Davidson
 * @copyright 2010
 */

// This page prints any errors associated with logging in and creates the login, including the form.

// Prints any error messages, if they exists:
if (!empty($errors)) {
    echo '<h1>Error!</h1>
    <p class="error">The following error(s) occured:<br />';
    foreach ($errors as $msg) {
        echo " - $msg<br />\n";
    }
    echo '</p><p>Please try again.</p>';
}

// Display the form:
?>

<!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" />
<meta name="description" content="Caracole" />
<title>Titanium</title>
<link HREF="favicon.ico" type="image/x-icon" rel="icon" />
<link HREF="favicon.ico" type="image/x-icon" rel="shortcut icon" />
<link rel="stylesheet" type="text/css" href="css/tripoli.simple.css" media="screen, projection, print" />
<link rel="stylesheet" type="text/css" href="css/base.css" media="screen, projection, print" />
<link rel="stylesheet" type="text/css" href="css/layout.css" media="screen, projection, print" />
<link rel="stylesheet" type="text/css" href="css/style.css" media="screen, projection, print" />
<link rel="stylesheet" type="text/css" href="css/theme.css" media="screen, projection, print" />
<link rel="stylesheet" type="text/css" href="css/icons.css" media="screen, projection, print" />
<script type="text/javascript" SRC="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript">
//<![CDATA[
document.write('<link rel="stylesheet" type="text/css" href="css/js/js.css" media="screen, projection, print" />');
//]]>

$(document).ready(function(){

$(".close").click(function(){
$(this).parents(".message").hide("puff");
});

});


</script>
<!--[if IE]>
<link rel="stylesheet" type="text/css" href="css/ie/ie.css" media="screen, projection, print" />
<![endif]-->
 <!--[if lt IE 7]>
<script src="js/DD_belatedPNG_0.0.7a-min.js" type="text/javascript"></script>
<script>

DD_belatedPNG.fix(' #header, h1, h1 a, .close, .field,.paginate .current, .icon, .required-icon');

</script>
  <link rel="stylesheet" href="css/ie/ie6.css" type="text/css" media="screen, projection"/>
<![endif]-->
</head>
<body>
<!-- Content -->
<div id="login" class="content">
<div class="roundedBorders login-box">
<!-- Title -->
<div id="title" class="b2">
<h2>Log In</h2>
<!-- TitleActions -->
<div id="titleActions">
<div class="actionBlock">
<a href="#">Forgot your password ?</a>
</div>
</div>
<!-- /TitleActions -->
</div>
<!-- Title -->

<!-- Inner Content -->
<div id="innerContent">
<form action="login.php" method="post">
<div class="field">
<label for="username">Username</label>
<input type="text" class="text" id="username" name="username" />
</div>
<div class="field">
<label for="password">Password</label>
<input type="password" class="text" id="password" name="password"/>
</div>
<div class="clearfix login-submit">
<span class="fleft">
<input type="checkbox" name="remember-me" id="remember-me" />
<label for="remember-me">Remember me</label>
</span>
<span class="fright">
<button class="button" type="submit" name="submit"><strong>Log In</strong></button>
</span>
</div>
                    <input type="hidden" value="TRUE" name="submitted" />
</form>
</div>
<!-- /Inner Content -->
<div class="bBottom"><div></div></div>
</div>
</div>

</body>
</html>


loggedin.php

<?php

/**
 * @author Jeff Davidson
 * @copyright 2010
 */

// The user is redirected here from login.php.

session_start(); // Star the session.

// If no session value is present, redirect the user:
if (!isset($_SESSION['id'])) {
    require_once('inc/login_functions.php');
    $url = absolute_url();
    header("Location: $url");
    exit();
}

$page_title = 'Logged In!';

// Print a customized message:
echo "<h1>Logged In!</h1>
<p>You are now logged in, {$_SESSION['firstname']}!</p>
<p><a href=\"logout.php\">Logout</a></p>";


?>


I thought I'd come back in and insert the file manager I have setup here.

root/loggedin.php
root/login.php

root/inc/login_page.php
root/inc/login_functions.php