Re: checking for existance of $_SESSION variables

Hi Andy, Session Variable $guestbook exists? echo isset ( $_SESSION['guestbook'] ) ? 'yes' : 'no' ; Session Variable $guestbook exists and is not empty? echo ( isset ( $_SESSION['guestbook'] ) AND

       empty ( $_SESSION['guestbook'] ) === FALSE ) ? 'yes' : 'no';

-- red Andy B wrote:

hi... i have the following code and i need to check to see if $_SESSION['guestbook'] has been assigned to the session yet. if it has then use its values to create the combo box...if it hasnt then run the sql query and assign it to the session as well as fill the combo box with it... any ideas how? here is the current code: <? //combo_g.php combo box for guestbook //moduler: 100% reusable $guestbook=mysql_query("select * from rnjresort.guestbook order by Number ASC");?> <select name="edit"> <?if(!$guestbook){?> <option value="">(none)</option><?} else {?> <option value="ERROR">Select GuestBook listing</option> <?while($_SESSION['guestbook']=mysql_fetch_array($guestbook)){?> <option value=<?$_SESSION['guestbook']['Number']?>><?echo "(".$_SESSION['guestbook']['Number'].") ".$_SESSION['guestbook']['Name'];?></option> <?}}?> </select> sorry for the long listing of code... tnx