deleting sessions if user restarts

[ShaolinF]

Hey Guys,

 

A user submits a form and thus a session has been created. What I want to do is if the user presses the back button or decides to re-submit another form, it'll overwrite the current one. How can I do this ?

[pocobueno1388]

Just simply give the session a new value.

$_SESSION['var'] = 'new val';

[ShaolinF]

Well I tried that, but it seems like it doesn't work. When I submit a form I get blank entries on the process.php page. Also, I want the user to beable to refresh the page and not lose the data. Here is my code:

<?php
ob_start();
session_start();
	If (!isset($_POST['validate']))
		{
			header ("location: index.htm");
		}

	if (!isset($_SESSION['LOGGEDIN'])) // If user is not logged in
		{				
			//Add session
			echo "session was not set! User was not logged in" . "<BR>";
			$_SESSION['LOGGEDIN'] = TRUE;
			$_SESSION['NAME'] = $_POST['name'];
			$_SESSION['CONTACTNO'] = $_POST['contact'];
			$_SESSION['EMAILADD'] = $_POST['email'];
			$_SESSION['GENDER'] = $_POST['sex'];
		}
		else
		{
			echo "<BR>" . "session is set! User is logged in";
		}
?>

[kratsg]

Use the referrer function.

 

<?php
$refer=$_SERVER['HTTP_REFERER'];

if($refer == [b]page to click back from[/b]){
//overwrite session
} else {
//do nothing
}

?>

[ShaolinF]

Ok, I doing the following and it still doesn't work:

$refer=$_SERVER['HTTP_REFERER'];
	if($refer == ("http://www.mysite.com/test/")){
		echo "overwrite session";
		$_SESSION['LOGGEDIN'] = FALSE;
	} else {
		//do nothing
	}