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Login and Logout with cookie and session error

Discussion in 'PHP' started by ifrostpresents, Sep 23, 2011.

  1. ifrostpresents

    ifrostpresents New Member

    Joined:
    Sep 23, 2011
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    index
    PHP:
    <?php
    ob_start
    ();
    session_start();

    require_once (
    "functions.php");

    if (
    checkLoggedin())
        echo 
    "<H1>You are already logged in - <A href = \"login.php?do=logout\">logout</A></h1>";
    else
        echo 
    "<H1>You are not logged in - <A href = \"login.php\">login</A></h1></h1>";
    ?> 
    functions

    PHP:
    <?php
    include("connection.php");
    function 
    createsessions($username,$password)
    {
        
    //Add additional member to Session array as per requirement
        
    session_register();

        
    $_SESSION["gdusername"] = $username;
        
    $_SESSION["gdpassword"] = md5($password);
        
        if(isset(
    $_POST['remme']))
        {
            
    //Add additional member to cookie array as per requirement
            
    setcookie("gdusername"$_SESSION['gdusername'], time()+60*60*24*100"/");
            
    setcookie("gdpassword"$_SESSION['gdpassword'], time()+60*60*24*100"/");
            return;
        }
    }

    function 
    clearsessionscookies()
    {
        unset(
    $_SESSION['gdusername']);
        unset(
    $_SESSION['gdpassword']);
        
        
    session_unset();    
        
    session_destroy(); 

        
    setcookie ("gdusername""",time()-60*60*24*100"/");
        
    setcookie ("gdpassword""",time()-60*60*24*100"/");
    }

    function 
    confirmUser($username,$password)
    {


    $sql="SELECT * FROM $tbl_name WHERE username='$username' and password='$password' and accounttype='$accounttype'";

    $result=mysql_query($sql);

    // Mysql_num_row is counting table row
    $count=mysql_num_rows($result);
    // If result matched $username and $password, table row must be 1 row

    if($count==1){
    include(
    "correct.php");
    }
        else{
    include(
    "incorrect.php");
    }
    }

    function 
    checkLoggedin()
    {
        if(isset(
    $_SESSION['gdusername']) AND isset($_SESSION['gdpassword']))
            return 
    true;
        elseif(isset(
    $_COOKIE['gdusername']) && isset($_COOKIE['gdpassword']))
        {
            if(
    confirmUser($_COOKIE['gdusername'],$_COOKIE['gdpassword']))
            {
                
    createsessions($_COOKIE['gdusername'],$_COOKIE['gdpassword']);
                return 
    true;
            }
            else
            {
                
    clearsessionscookies();
                return 
    false;
            }
        }
        else
            return 
    false;
    }
    ?> 
    connection

    PHP:
    <?php
    $host
    ="localhost"// Host name
    $dbusername=""// Mysql username
    $dbpassword=""// Mysql password
    $db_name="test"// Database name
    $tbl_name="members"// Table name
    mysql_connect("$host""$dbusername""$dbpassword")or die("cannot connect");
    mysql_select_db("$db_name")or die("cannot select DB");

    ?>
    login

    PHP:
    <?php

    ob_start
    ();
    session_start();
    include(
    "connection.php");
    require_once (
    "functions.php");

    $returnurl urlencode(isset($_GET["returnurl"])?$_GET["returnurl"]:"");
    if(
    $returnurl == "")
        
    $returnurl urlencode(isset($_POST["returnurl"])?$_POST["returnurl"]:"");

    $do = isset($_GET["do"])?$_GET["do"]:"";

    $do strtolower($do);

    switch(
    $do)
    {
    case 
    "":
        if (
    checkLoggedin())
        {
            echo 
    "<H1>You are already logged in - <A href = \"login.php?do=logout\">logout</A></h1>";
        }
        else
        {
            
    ?>
            <form NAME="login1" ACTION="login.php?do=login" METHOD="POST" ONSUBMIT="return aValidator();">
            <input TYPE="hidden" name="returnurl" value="<?$returnurl?>">
            <TABLE cellspacing="3">
            <TR>
                <TD>Username:</TD>
                <TD><input TYPE="TEXT" NAME="username"></TD>
                <TD>Password:</TD>
                <TD><input TYPE="PASSWORD" NAME="password"></TD>
            </TR>
            <TR>
                <TD colspan="4" ALIGN="center"><input TYPE="CHECKBOX" NAME="remme">&nbsp;Remember me for the next time I visit</TD>
            </TR>
            <TR>
                <TD ALIGN="CENTER" COLSPAN="4"><input TYPE="SUBMIT" name="submit" value="Login"></TD>
            </TR>
            </form>
            </TABLE>
        <?
        }
        break;
    case "login":




        $username = isset($_POST['username'])?$_POST['username']:"";
        $password = isset($_POST['password'])?$_POST['password']:"";

        if ($username=="" or $password=="" )
        {
            echo "<h1>Username or password is blank</h1>";
            clearsessionscookies();
            header("location: login.php?returnurl=$returnurl");
        }
        else
        {
            if(confirmuser($username,md5($password))) // As pointed out by asgard2005
            {
                createsessions($username,$password);
                if ($returnurl<>"")
                    header("location: $returnurl");
                else
                {
                    header("Location: index.php");
                }
            }
            else
            {
                echo "<h1>Invalid Username and/Or password</h1>";
                clearsessionscookies();
                header("location: login.php?returnurl=$returnurl");
            }
        }
        break;
    case "logout":
        clearsessionscookies();
        header("location: index.php");
        break;
    }
    ?>
    I need your help guys :embarasse
    I'm having a problem with my login. I dont encounter any error but I cant login :embarasse
    Please help me :happy:
    Thank you :nice:
     

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