how to identify a returning user and run a code once for him

[saeed_violinist]

Dear friends,

Im trying to make a pop-up in my page. I done it fine and pop-up "floating layout" is displaying fine. I just want that my users see this pop-up once a week (time is not so important but not less than a day pls!) .

I know it must be done with help of cookies and a if statement ...please help me do this.

I mean something like this :

if (new user) {
show pop-up } else { dont show!}

thanks

[SharkBait]

So something like:

[code]
<?php

if(isset($_COOKIE['myCookie'])) {
  ShowPopUp();
}

?>
[/code]

[/code]

[saeed_violinist]

thanks, I dont have created any cookie myself until now, I want to try it myself now. if I cant sucess or I sucess I will write it here  ;D

[saeed_violinist]

hey Im cool :d

[code]
<?php

SetCookie("popupshown", "yes", time()+ 3600);
if (!isset($_COOKIE["popupshown"])) {
ShowPopUp()
}

?>
[/code]

Works great!

[saeed_violinist]

ok, but is there a better way to do this job ?