page counter, setting a session variable

[woodplease]

i'm creating a page counter which updates a value in a database each time the page is loaded.

I'm trying to make it so that it checks to see if a session has been set, if not, it updates the database, and then sets the session. This way it wont update every time someone refreshes the page.

$id=$_GET['id'];
if(!isset($_SESSION[$id])){
$_SESSION[$id]=	$id;
$views = $row['views'] + 1;
$update_views=mysql_query("UPDATE topic SET views='".$views."' WHERE topic_id='".$id."'")

 

i want to set the session variable as that of the page id ($id)

The problem is that it keeps updating the database everytime the page is reloaded. I'm not sure if i'm setting the session variable correctly.

Any ideas would be great

 

Thanks

[BlueSkyIS]

do you have session_start() somewhere above that code?

[woodplease]

yes, right at the top, first line

[BlueSkyIS]

can we see all relevant code?

[woodplease]

its ok, i've fixed it now, turns out i needed to add some quotes to the variable

if(!isset($_SESSION["'$id'"])){
$_SESSION["'$id'"]=	$id;

 

Thanks anyway

[BlueSkyIS]

that doesn't make sense, but whatever works.