Table Structure Php Matrix Grid - php

Question

I would like to create a matrix grid using widths and drops from the database.
The price would need to be displayed in the associated width and drop cell.
For example:
width x drop: 600 700 800 900
600 226
700 236
800 248
900 290
Some values will be not be there as the product instance has not been created.
I have three tables:
1) product_instance (id, product_name, width_id, drop_id, price)
2) product_width (id, width)
3) product drop (id, drop)
This is what I have so far:
<table>
<thead>
<tr>
<th>w x d</th>
<?
$query = "SELECT * FROM product_instance
INNER JOIN product_width ON product_instance.width_id
= product_width.width_id
INNER JOIN product_drop ON product_instance.drop_id =
product_drop.drop_id
INNER JOIN products ON product_instance.product_id =
products.product_id WHERE product_instance.product_id
= 1";
$select_products = mysqli_query($connection, $query);
while ($row = mysqli_fetch_assoc($select_products)) {
$width_value = $row['width_value'];
echo "<th>$width_value</th>";
}
?>
</tr>
</thead>
<tbody>
<?
$query = "SELECT DISTINCT * FROM product_instance
INNER JOIN product_width ON
product_instance.width_id
= product_width.width_id
INNER JOIN product_drop ON product_instance.drop_id =
product_drop.drop_id
INNER JOIN products ON product_instance.product_id =
products.product_id WHERE product_instance.product_id
= 1";
$select_products = mysqli_query($connection, $query);
while ($row = mysqli_fetch_assoc($select_products)) {
$drop_value = $row['drop_value'];
$price = $row['price'];
echo "<tr>";
echo "<td>$drop_value</td>";
echo "<td>$price</td>";
echo "</tr>";
}
?>
</tbody>
</table>
I'm not sure how to do this and have looked around but cant find a solution.

Answer 1

I managed to find a workable solution using PHPivot
My code now looks like this:
<?php
require 'pivot/PHPivot.php';
//Get the data
//Could be from a database, JSON, etc
$query = "SELECT * FROM product_instance
INNER JOIN product_width ON product_instance.width_id =
product_width.width_id
INNER JOIN product_drop ON product_instance.drop_id =
product_drop.drop_id
INNER JOIN products ON product_instance.product_id =
products.product_id WHERE product_instance.product_id = 1";
$select_products = mysqli_query($connection, $query);
$result = [];
$counter = 0;
while ($row = mysqli_fetch_array($select_products)) {
$menu[$counter] = array(
"width" => $row['width_value'],
"price" => $row['price'],
"drop" => $row['drop_value']
);
array_push($result,$menu[$counter]);
$counter ++;
}
$data = $result;
//Just needs to be saved in an associative PHP array
$products = PHPivot::create($data)
->setPivotRowFields('width')
->setPivotColumnFields('drop')
->setPivotValueFields('price',PHPivot::PIVOT_VALUE_SUM,
PHPivot::DISPLAY_AS_VALUE, 'Drop')
->addFilter('width', '', PHPivot::COMPARE_NOT_EQUAL)
//Filter out blanks/unknown genre
->generate();
echo $products->toHtml();
?>