[ER diagram help for online shop]

Hi,
I'm creating an online clothes shop but having trouble with the ER diagram e.g. picking out entities etc. was wondering if anyone could help me out or even give me an example one?
Cheers
steph

[help with config settings to get me started]

was wondering if anyone could help me with this .....i'm working on a computer not using local host but iss and therefore i need to change these config settings but not sure what to....?

// setting up the web root and server root for
// this shopping cart application
$thisFile = str_replace('\\', '/', __FILE__);
$docRoot = $_SERVER ("csweb");





$webRoot = str_replace(array($docRoot, 'library/config.php'), '', $thisFile);
$srvRoot = str_replace('library/config.php', '', $thisFile);

define('WEB_ROOT', $webRoot);
define('SRV_ROOT', $srvRoot);

any ideas?
thanks
steph

[help with online store product listing]

Hi I have 2 scripts.....1 which should list all categories in a database and one which should list all products belonging to the category but am getting an error ...here are the tables
[code]
CREATE TABLE `products` (
  `product_id` int(5) NOT NULL auto_increment,
  `product_name` varchar(50) NOT NULL default '',
  `cat_id` int(5) NOT NULL default '0',
  `description` text NOT NULL,
  `image` varchar(255) default NULL,
  `amount` float(10,2) NOT NULL default '0.00',
  PRIMARY KEY  (`product_id`)
) TYPE=MyISAM COMMENT='Table for collecting product data' AUTO_INCREMENT=3;

#
# Dumping data for table `products`
#

INSERT INTO `products` VALUES (1, 'blue dress', 2, '', NULL, '30.00');
INSERT INTO `products` VALUES (2, 'green skirt', 3, '', NULL, '20.00');
CREATE TABLE `category` (
  `id` int(5) NOT NULL auto_increment,
  `category_name` varchar(50) NOT NULL default '',
  `cat_description` text NOT NULL,
  PRIMARY KEY  (`id`)
) TYPE=MyISAM COMMENT='Table for product categary' AUTO_INCREMENT=8;

#
# Dumping data for table `category`
#

INSERT INTO `category` VALUES (1, 'shoes', '');
INSERT INTO `category` VALUES (2, 'dresses', '');
INSERT INTO `category` VALUES (3, 'skirts', '');
INSERT INTO `category` VALUES (4, 'jeans', '2006-04-13 16:19:03');
INSERT INTO `category` VALUES (5, 'shirt', '2006-04-19 16:59:05');
INSERT INTO `category` VALUES (6, 'test', '2006-04-20 11:59:59');
INSERT INTO `category` VALUES (7, 'yo', '2006-04-20 14:33:30');
[/code]

here's my code
shop1.php
[code]
// query database, order alphebatically

$query ="SELECT * from category order by category_name ";
$result= mysql_query($query) or die
("Could not execute query : $query." . mysql_error());



while ($row = mysql_fetch_array($result))
{
$cat_id=$row['id'];
$cat_name = $row["category_name"];
$cat_description = $row["cat_description"];

echo "<li><b><a href=productlist.php?id=$cat_id>$cat_name</a></b> [ ";

// Now query products table to see how many listing in each category
if ($_GET['cat_id'] == $cat_id){
$get_items = "SELECT product_id, product_name, description FROM products WHERE id=$cat_id order by product_name";
$result = mysql_query($get_items)or die(mysql_error());

if (mysql_num_rows($result)<1){
$display_block = "<P>none</p>";
}else{
$display_block .="<ul>";

while($items = mysql_fetch_array($result)){
$product_id =$items['product_id'];
$product_name =$items['product_name'];
$description =$items['description'];

$display_block .="<li><a
href=\"productlist.php?item_id=$item_id>$product_name</a>
</strong> (\$$description)";
}
$display_block .="</ul>";
}
}
}


// Include the HTML footer file.
include_once ('includes/footer.html');
?>


and also
productlist.php

if(isset($cat_id))
{
$query = "SELECT * from products where cat_id='$cat_id' ";
}

// Check if there's a budget variable, output correct query

if(isset($budget))
{
$query ="SELECT * from products where amount < '$budget' ";
}

// If both variables are not present, output default query

if(!isset($budget) && !isset($cat_id))
{
$query = "SELECT * from products ";
}

// execute query
$result= mysql_query($query) or die
("Could not execute query : $query." . mysql_error());

while ($row = mysql_fetch_array($result))
{
$id=$row["product_id"];
$name=$row["product_name"];
$cat_id=$row["cat_id"];
$image=$row["image"];
$dsc = $row["description"];
$amout=$row["amount"];

// query category table for category name.
$catquery = "SELECT category_name from category where id='$id' ";
$result2= mysql_query($catquery) or die
("Could not execute query : $catquery." . mysql_error());

$cname = mysql_fetch_array($result2);

// Now print out the catalog display

?><table cellspacing="1" cellpadding="1" border="0" align="center" width="90%">
<tr>
<td><b><?php echo "$name"; ?></b>
<p><?php echo "<b>Category: $cname[category_name]</b><br>$dsc"; ?></p>

<?php
if (!(empty($image))) // image field is not empty
{
echo "<img src=$image border=0 alt=$name width=150 align=right>";
}
?>

<form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="image" src="https://www.paypal.com/en_GB/i/btn/x-click-but22.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
<img alt="" border="0" src="https://www.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1">
<input type="hidden" name="add" value="1">
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="d1340101@qub.ac.uk">
<input type="hidden" name="item_name" value="green dress">
<input type="hidden" name="amount" value="20.00">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="GBP">
<input type="hidden" name="lc" value="GB">
<input type="hidden" name="bn" value="PP-ShopCartBF">
</form>

</td></tr></table>
<?php

} // end of while

?>
<?php // Include the HTML footer file.
include_once ('includes/footer.html');
?>
[/code]

and i'm getting this error so far
Notice: Undefined index: cat_id in F:\13401017\website\12\html\shop1.php on line 35

totally stuck on this so anyhelp wud be much appreciated
thanks

[b]EDIT BY OBER: PLEASE USE CODE TAGS WHEN POSTING CODE![/b]

[help with menus]

[!--quoteo(post=366524:date=Apr 19 2006, 01:01 PM:name=poirot)--][div class=\'quotetop\']QUOTE(poirot @ Apr 19 2006, 01:01 PM) [snapback]366524[/snapback][/div][div class=\'quotemain\'][!--quotec--]
If you want it to expand with no need to refresh the browser or open a link, you would have to use Javascript (and to retrieve all the products from all categories upon page load).

If not, you can make the a link for each category (like: ?cat=1), retrieve the chosen category ($_GET['cat']) and use this value to find all the products for the category (SELECT * FROM `products` WHERE category = "$_GET['cat']")
[/quote]


hey thanks for the help but i'm totally new!!
any snippets of code ....i kinda understand but dunno how 2 put it all 2gether!
cheers steph

[help with menus]

Hi,
i'm designing an online shop and have 2 tables in my database (categories and products) I need to have a menu that lists all categories and then when a categorie is clicked it exapnds to show all th products within that category....any help would be great
thanks
steph