Blinking sessions.

[zingbats]

Could you give me an example to check if a session called USERNAME is present. 'tis a simple question but it is nagging me.

[stolzyboy]

<?
session_start();
if ($_SESSION['USERNAME'])
{
echo "Session is Available!";
}
else
{
echo "Session is NOT Available!";
}
?>

[zingbats]

This doesn't this work, when you log in, it just clears the login form..

<?
session_start();
if ($_SESSION['username'])
{
?>
//Start of page HTML
<?php 
session_start(); 
header("Cache-control: private"); //IE 6 Fix 
   $name = $_POST['username']; 
   session_register('username');  

   $_SESSION['username'] = $username; 
?>
<?php 
session_start(); 
header("Cache-control: private"); //IE 6 Fix 
   $name = $_POST['password']; 
   session_register('password'); 
   $_SESSION['password'] = $password;
?>
--Rest of HTML--

<?
}
else {
?>
//HTML to be shown IF there is no username session
--LOGIN HTML--

<?php
}
?>

[stolzyboy]

this is the best example i can give you to tell if an existing session is already available and has been set on another page
it will let you into the first part if the username is in a session,
otherwise it will drop you into the else, now ensure that you only
use one session_start(); at the very top of the page, before
anything else

<?
session_start();
if ($_SESSION['username'])
{
?>
show your html code when username is there
<?
}
else
{
?>
show your html code when username is not there
<?
}
?>

[zingbats]

now ensure that you only
use one session_start(); at the very top of the page, before
anything else

<?php 
session_start(); 
header("Cache-control: private"); //IE 6 Fix 
   $username = $_POST['username']; 
   session_register('username');  

   $_SESSION['username'] = $username;
?>
<?php 
session_start(); 
header("Cache-control: private"); //IE 6 Fix 
   $password = $_POST['password'];  

   session_register('password'); 
   $_SESSION['password'] = $password;
?>

Is at the top of the first set of HTML to be included. Is that ok?

[stolzyboy]

yes as long as that is the only place you have session_start(); it can only be in one place

[stolzyboy]

did you try my example after you were at a page that registered the session variable to see if it worked

[stolzyboy]

check out this thread, i helped another person out with a similar situation, but don't really have the time i spent with him to spend with you, i believe there is a zip file to download then you can look at the session code i gave him and maybe decipher it for yourself instead of me giving snippets to you

[zingbats]

What thread!

[stolzyboy]

oops for got to paste it into the message, lol

http://www.phpbuilder.com/board/showthread.php?s=&threadid=10230864

[zingbats]

This doesn't seem to be working. I have the session start on the index.php page.

Header.php is included on index.php. It is supposed to show the login form IF but, it always shows the login form. Even though the sessions exsist.

Because the header page is included, I tried the if thing with "session_start()" being there and NOT being there.

Taken from header.php ±

<?
if ($_SESSION['username'])
{
?>

<?php
    $link = mysql_connect("localhost", "zingbats", "my pwl")
        or die("Could not connect");
    mysql_select_db("tycooneden_com") or die("Could not select database");

$query = "SELECT * FROM phpbb_users WHERE username = '$_SESSION[username]' AND WHERE user_password = md5('$_SESSION[password]')";
$result = mysql_query($query) or die("Query failed");
$foo=mysql_fetch_array($result);

/* Start the clan defining */

$user_points=$foo['user_points'];

mysql_close($link);
?>
        <tr>
          <td width="100%" bgcolor="#C0C0C0">
         Welcome $_SESSION['username'], you have £$user_points, get spending and earning!</td>
        </tr>

<?
}
else
{
?>

    <tr>
      <td width="100%" bgcolor="#C0C0C0">
     <form method="POST" action="index.php">
<div align="left">
             <table border="0" cellpadding="2" style="border-collapse: collapse" bordercolor="#111111" width="53%" id="AutoNumber5">
               <tr>
                 <td width="17%"><b><i><font size="4" color="#333333">Login:</font></i></b><font color="#333333"><b> </b></font><font size="4" color="#333333">&nbsp;</font></td>
                 <td width="15%"><font color="#333333"><b> User:</b></font></td>
                 <td width="19%"><input type="text" name="username" size="20"></td>
                 <td width="17%"><font size="4" color="#333333"> Password:</font></td>
                 <td width="16%"><input type="password" name="password" size="20"></td>
                 <td width="16%"><input type="submit" value="Login" name="B1"></td>
               </tr>
               </form>
             </table>
           </div>

      </td>
    </tr>
  </table>
  </center>
</div>

<?
}
?>

At the top of index.php:

<?php 
session_start();
header("Cache-control: private"); 
   $name = $_POST['username']; 
   session_register('username');  

   $_SESSION['username'] = $nope;
   $secondname = $_POST['password'];  

   session_register('password'); 
   $_SESSION['password'] = $noper;
?>