Making a Login Work After Cache, Cookies, etc. Have Been Cleared

Posted by John on Stack Overflow See other posts from Stack Overflow or by John
Published on 2010-06-11T17:40:31Z Indexed on 2010/06/11 17:43 UTC
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Hello,

I am using the code below for a user login. The first I try to login after cache / cookies, etc. have been cleared, the browser refreshes and the user name is not logged in. After that, logging in works fine.

Any idea how I can make it work the first time?

Thanks in advance,

John

index.php:

   <?php 


        if($_SERVER['REQUEST_METHOD'] == "POST"){header('Location: http://www...com/.../index.php?username='.$username.'&password='.$password.'');} 



         require_once "header.php"; 
         include "login.php";
         require_once "footer.php";

        ?>

login.php:

<?php
if (!isLoggedIn())
{
    if (isset($_POST['cmdlogin']))
    {
        if (checkLogin($_POST['username'], $_POST['password']))
        {
            show_userbox();


        } else
        {
            echo "Incorrect Login information !";
            show_loginform();
        }
    } else
    {

        show_loginform();
    }

} else
{

    show_userbox();


}



?>

show_loginform function:

function show_loginform($disabled = false)
{

    echo '<form name="login-form" id="login-form" method="post" action="./index.php?'.$_SERVER['QUERY_STRING'].'"> 

    <div class="usernameformtext"><label title="Username">Username: </label></div> 
    <div class="usernameformfield"><input tabindex="1" accesskey="u" name="username" type="text" maxlength="30" id="username" /></div> 


    <div class="passwordformtext"><label title="Password">Password: </label></div> 
    <div class="passwordformfield"><input tabindex="2" accesskey="p" name="password" type="password" maxlength="15" id="password" /></div> 


    <div class="registertext"><a href="http://www...com/.../register.php" title="Register">Register</a></div> 
    <div class="lostpasswordtext"><a href="http://www...com/.../lostpassword.php" title="Lost Password">Lost password?</a></div> 

  <p class="loginbutton"><input tabindex="3" accesskey="l" type="submit" name="cmdlogin" value="Login" ';
    if ($disabled == true)
    {
        echo 'disabled="disabled"';
    }
    echo ' /></p></form>';


}

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