Displaying query rows dependent on another query's result - php

Question

I have a function in PHP that prints a list of inventories with their IDs.
Another function lists the products in the inventory with the corresponding ID from the inventory list.
But I don't know how to get the inventory ID from the list correctly into the product list, and it doesn't work for me. I don't know exactly where I'm doing wrong.
When I list the products with a specific ID and refresh the page, I want the list to stay the same.
A function to get a list
<?
php function fetchSeznamInventur() {
global $userCon;
global $rowcount;
global $query;
global $inventuraId;
global $row;
$query = mysqli_query($userCon, "SELECT * FROM seznamInventur");
//$inventuraId = $row["id"];
$rowcount = mysqli_num_rows($query);
}
?>
List listing to HTML
<?php
<table border="1" class="invTable">
<thead>
<th>Datum</th>
<th>ID</th>
<th>Název</th>
</thead>
<?php
for ($inv = 1; $inv <= $rowcount; $inv++) {
$row = mysqli_fetch_array($query);
?>
<tr>
<td><?php echo $row["createdate"]?></td>
<td name="id"><?php echo $row["id"] ?></td>
<td><?php echo $row["name"]?></td>
<td><input type="submit" name="submit" value="Detail"></td>
</tr>
<?php
}
?>
</table>
?>
Obtaining products by inventory ID
<?php
function fetchInventura() {
global $userCon;
global $inventuraId;
global $rowcount;
global $query;
$query = mysqli_query($userCon, "SELECT * FROM inv WHERE inventuraId='$inventuraId'");
$rowcount = mysqli_num_rows($query);
echo $inventuraId;
}
?>
List of products in html
<?php
for ($products = 1; $products <= $rowcount; $products++) {
$row = mysqli_fetch_array($query);
?>
<tr>
<td><?php echo $row["id"]?></td>
<td><?php echo $row["inventuraId"] ?></td>
<td style="display: none;"><?php echo $row["name"]?></td>
<td><?php echo $row["ean"]?></td>
<td style="display: none;"><?php echo $row["plu"]?></td>
<td style="display: none;"><?php echo $row["externalId"]?></td>
<td style="display: none;"><?php echo $row["productId"]?></td>
<td><?php echo $row["quantity"]?></td>
<td><?php echo $row["versiondate"]?></td>
</tr>
<?php
}
?>
</table>

Answer 1

<input type="submit" name="submit" value="Detail">
won't do much, as it's not inside a form.
You probably need a hyperlink which goes to a "products" page and passes the inventory ID as a query parameter, e.g.
Display
And then on the products page, you'd use $_GET["inventoryID"] to get the ID, and pass that into your SQL query (but please use a parameter, don't inject variables directly into the SQL, it's a security risk).