Query database on clicking a link - php

Question

I'm retrieving products from my database and listing them in a while loop. Like this
<?php
while($row = mysql_fetch_row($result)){
echo '<div class="product_info">';
echo '<div class="category_product_title">Product';
echo '</div>';
echo '<div class="category_product_number">#'.$row[0].'('.$row[1].')'.'</div>';//prints id and name
echo '<div class="category_product_description">'.$row[2].'</div>';//prints description
echo '<div class="category_product_price">'.$row[4].'TL</div>';//prints price
echo '<div class="category_details">DETAILS</div>';//The link to list the product details
echo '</div>';
echo '</div>';
}
?>
I want to be able to print more details on a paticular prodcut when the "DETAILS" link is clicked by getting the id or name of that paticular product and using to query the database.
I tried saving the id in a session variable like this $_SESSION['id'] = $row[0] but since i'm looping through these products, i'm not able to get the id of a specific product when it is clicked. How can i do this?. I'm confused because of the loop. Thanks

Answer 1

You can assign a different link to each one of the products with a GET variable.
Instead of DETAILS, the link could point to DETAILS.
Then, on the product page productpage2.php, you can get the selected ID from the $_GET superglobal array like this:
$id = $_GET['id'];

Answer 2

Lots of ways to do this. I would probably do something like:
echo '<div class="product_info" data-product-number="' . $row[0] . '">';
Then just grab the data-product-number attribute with JavaScript and pass it along with the request. Obviously, you'll need to verify this on the server side somehow once the request is made, since a user could set the product number in the request to anything they'd like.