select lists

[Anon]

Hi,
New to php/mysql but learning fast, I have run into a situation that I cannot figure out, I am putting together a shopping cart that uses Php Sessions, I am using a substring of the $PHPSESSID as the user id. I have set up a search page for the admin section using the user id, my question is.If I have multiple instances of a unique user id due to multiple items in his cart, how do I get only one instance of the user id to be printed in the dropdown...
I am using a while loop to get the user id's for the dropdown.
Hope this is clear enough to answer
Thx,
Mike

[Anon]

Hi
Would it help to have another session var that increments everytime somthing is put in the cart and then use your $userid.$cartcount to id items in the cart and the userid as the 'key' to all of that?

Nick

[frymaster]

first, the phrase "multiple instances of a unique session id" just sounds wrong...🙂

I would create an associative array with the session id's as the keys then on each iteration of the loop check to see if there is a value for that key. Okay, maybe that didn't make sense... let's put it this way:

while(true)
{
// code to put the session id into $session_id here

if($session_check_array["$session_id"] == "")
{
    // you know this is the first occurrance of that session_id
    // so do what you need to here....

     $session_check_array["$session_id"] = 1;
    // we put a 1 in the array with the $session_id as the key so that
    // if we hit this session_id again, the value will not be NULL and this
    // chunk of code will be skipped
}

... that should be a little bit clearer (more clear?).

-frymaster

}

[Anon]

I know that multiple occurances of a unique ID sounds weird, but it was the best way to describe it, what happens is with each insert into the cart table the user id is inserted too, so when I go to make a dropdown of user id's I get multiple instances of the same id.