Allen McCabe wrote:
> I have a page on my site where I can optionaly filter by certain fields
> (order by filesize or file category), but I am implementing a shopping
> cart type of idea where users can submit an order.
>
> As administrators, my coworkers and I need to be able to filter orders by
> their contents. For example:
>
> View all orders for "Jack and the Beanstalk," where an order may have Jack
> and the Beanstalk and other items.
>
> I have an order table that keeps track of the order_id, the date, the
> status, etc. I also have an order_lineitem table that is the contents of
> the order. This has a one-to-many structure (without foreign keys because
> it is mysql).
>
> I was baffled as to how to filter the orders by the item_id that appears
> in the order_lineitem table.
>
> I just came up with this, but I'm not sure how the mysql_queries will
> handle an array. Do I have to do some extensive regular expression
> management here to get this to work, or will it accept an array?
>
> <?php
>
> if (isset($_POST['showid']))
> $showid = $_POST['showid'];
> $subSQL = "SELECT order_id FROM afy_show_lineitem WHERE show_id =
> {$_POST['showid']};";
> $subResult = mysql_query($subSQL);
> $where = "WHERE";
> $extQuery = 'order_id = {$subResult}';
> }
>
> $resultOrders = mysql_query("SELECT * FROM afy_order {$where}
> {$extQuery};") or die(mysql_error("Could not query the database!"));
>
> ?>
If $_POST['showid'] is likely to be an array, use implode to create a comma
separated string of values, then use IN to build the query.
$ids = implode(',', $_POST['showid'];
$subSQL = "SELECT order_id FROM afy_show_lineitem WHERE show_id IN ($ids)"
But you need also to check your logic - your query above will have two WHERE
in it and will fail miserably :-) And your call to mysql_error will
probably not help you either, as the (optional) argument should be a link
identifier, not a string of your choosing.
Cheers
--
David Robley
MS-DOS: celebrating ten years of obsolescence
Today is Sweetmorn, the 29th day of The Aftermath in the YOLD 3175.
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