What is the nature of the userid? is it something assigned by one of the
systems? or is it chosen by the user himself? or is it a constant such as
am employee ID?
Here's how I would approach it:
query the tables for the occurrence of the userid and obtain the system name
at the same time.
with the results, build a multidimensional associative array with userid and
system name such as
$prior[$row[system_name]][$row[userid]] = "grey";
Then in the code for the page loop though the systems with the userid such
as:
foreach ($prior as $system) { // This will hit your systems one
after the other
if ($prior[$system[$userid]]) { // if this variable exists, it will
test as true
$color = "grey";
} else {
$color = "black";
};
};
That would be my starting stab at it. I hope I understand enough of what
you're trying to do and that perhaps you understand what I am trying to do.
Let me know if this needs clarification.
Mark Cain
----- Original Message -----
From: "NIPP, SCOTT V (SBCSI)" <sn4265@xxxxxxx>
To: <php-db@xxxxxxxxxxxxx>
Sent: Monday, March 21, 2005 2:44 PM
Subject: Working with multiple tables...
> I am working on revising a web request app that I have already
> developed. The app basically provides a list of system names with
> checkboxes for a user to select to request accounts on the systems. One
> feature I am intending to add is that the app should check a separate
> database of user accounts to see if the user already has an account on
> the system. I think I could get it to work by making a query of the
> userid for each system, but this seems quite inefficient. I would
> rather somehow have a single query that gets a list of system names and
> also checks the user account database at the same time to determine if
> the user already has an account. Then I would like to display ALL of
> the systems, but "grey out" the ones that the user already has accounts
> on. Can someone help me figure out the best way to go about this?
> Thanks in advance.
>
> Scott Nipp
> Phone: (214) 858-1289
> E-mail: sn4265@xxxxxxx
> Web: http:\\ldsa.sbcld.sbc.com
>
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