Get the ID of my clicked product - php

Question

I'm new to this site and wondering if somebody could help. I'm creating a website using bootstrap. I added some products in my DB and have used a while loop to display them on the page.
If you click on one of the products it takes you too a new page which should display all the information from only that product.
if ($select_db) {
$SQL = "SELECT * FROM products";
$result = mysql_query($SQL);
?>
<?php
$c = 0;
$id = -1; // The counter
$n = 3; // Each Nth iteration would be a new table row
while ($db_field = mysql_fetch_assoc($result)) {
$itemName = $db_field['name'];
$itemDescription = $db_field['description'];
$itemPrice = $db_field['price'];
$myPic = $db_field['image_name'];
if ($c % $n == 0 && $c != 0) { // If $c is divisible by $n...
echo '<div class="row" ></div>';
}
$c++;
$id++;
?>
<div class="col-md-4 col-sm-4" style="background-color:lavender;" id = 1>
<a href="productInfo.php">
<p> <?php echo $c ?> </p>
<h2> <?php echo $itemName ?> </h2>
<p><img class="img-responsive" img src= '<?php echo $myPic ?>' alt="Oops, Image cannot be found!" height="300" width="300"/></p>
<h3><?php echo $itemDescription ?></h3>
<p><?php echo $itemPrice ?></p>
<div id="selector" class="btn-group">
<button type="button" class="btn btn-primary" id="<?php $id ?>">Add</button>
</div>
<?php
$productsArray[] = array(
"id" => $id,
"itemName" => $itemName,
"itemDescription" => $itemDescription,
"price" => $itemPrice
);
//$_SESSION['sessionArray']=$productsArray;
?>
</a>
</div>
<?php
Now when I click on one of the columns it takes me to productInfo.php. I'm stuck as to how to display the product that is clicked?
I have added a variable $id which is the same as the array, example array [0] has id of 0, array [1] has id of 1. I think I'm trying to say if ID = 0 then display the results in the array at place [0]. I'm not sure if this helps?
I tried to display just the $id for now on productInfo.php but it only shows the last $id in the array
<?php
session_start();
if (isset($_SESSION["id"])) {
$newID = $_SESSION["id"];
echo $newID;
}
?>
I know this because it doesn't know which one I'm selecting. Am I making this too complicated?
Any help would be appreciated greatly!

Answer 1

Within your while loop I would add:
View More
This would concatenate the value of $id++ into the href under each item. Then all you need to do is create a landing page for product_page.php, define the $id on that page again and pull the data for that product from the db. You can do this without using any arrays.
Edit:
You would define $id on your product_page.php using $_GET['id'], as it is in the url, supplied by your href above ^
A good practice to get into whilst in the development stages would be to echo $id; to see if it is echoing the correct data from your while loop. If it echo's the correct $id then you can send the $id to the url through the href.
Let me know if this works or not.
Pulling data from db of your ID:
$sql = "SELECT * FROM table WHERE id='".$myID."'";
$res = mysql_query($sql);
$row = mysql_fetch_assoc($res);
$data1 = $row['whatever'];
echo $data1;