session_destroy

[fife]

Im having issues destroying a session and then re-creating the session again.  Its easier to show the code.

 

First of all I have a form that shows you different business details.

<form action="" method="POST" id="mybusfrm">
       <ul id="bus_list"> 
     	 <li><input  type="image" src="<?php  if ($CP['logo']=='logo_default.jpg') 
					{ echo "/images/logo_default.jpg"; }
   else { echo	"/members/images/{$CP['county']}/{$CP['logo']}"; }
   ?>" width="60" height="60" id="businsert" name="businsert" />
      	</li>
      	<li><?php echo $CP['name']; ?></li>
       <input name="bus" type="hidden" value="<?php echo $CP['busID'];?>">
       <input name="pap" type="hidden" value="<?php echo $CP['permission'];?>">
       </ul>
     </form>

 

I have two hidden fields with the business ID and the users permission.  The information that displays on the page is taken from the session

 

$_SESSION['busID']

 

This session is fed through a function that gets the details.

 

Before that obviously if the user clicks a different business then the page needs to update with the business details from the newly replaced session variable. so for the  code that changes the variable name.

 

if(isset($_POST['businsert_x'])){	
session_destroy($_SESSION['busID']);
session_destroy($_SESSION['pap']);	
$bus = trim($_POST['bus']);
$pap = trim($_POST['pap']);	
if (is_numeric($bus) && is_numeric($pap)) {
$bus = mysql_real_escape_string($bus);
$pap = mysql_real_escape_string($pap);
$_SESSION['busID'] = $bus;
$_SESSION['pap'] = $pap;
$url = "index.php";        
header("Location: $url");
}
else {echo "Fail";}}
//end check club

 

This code has been previously working but for some reason its now stopped.  Also I get a logo error of

 

 

Wrong parameter count for session_destroy() in /home/sites/site.com/public_html/members/index.php on line 10, referer: http://www.site.com/members/index.php

 

there is also one for line 11.  These two lines are the session_destroy($_SESSION['busID']); lines respectively.

 

I have tried adding to the page refresh......

 

$url = "index.php/business='$busID'&'$pap'";

 

To see if the variables are even changing when a different business is selected and they do. 

 

Please help.

 

Thanx

[DavidAM]

session_destroy destroys the entire session, not an individual variable stored in the session. To remove a variable from a session you can just unset it:

 

if(isset($_POST['businsert_x'])){
unset($_SESSION['busID'], $_SESSION['pap']);

 

This code has been previously working but for some reason its now stopped.

Most likely this code has always been throwing an error. Your error_reporting value was probably set in such a way as to prevent the errors from being displayed.

[fife]

Ok thats great thank you. I have changed that but the page is still not updating with the new business details. After that form has processed i am left with a new

 

$_SESSION variable (which is basically an ID)

 

then I have this code

$Thebus = TheBus($_SESSION['busID']);


echo $Thebus['name'];

 

and the function

 

function TheBus($busID)	 {
	$Thebusq = mysql_query("SELECT * FROM business WHERE busID = '$busID'");
$Thebus = mysql_fetch_array($Thebusq);
return $Thebus;

}