Compare two results and show results PHP - php

Question

I'm trying to get two identical IDs and turn them into a name, explaining better I have a table with ID-COMPANY NAME and in the product table ID COMPANY - product name, I would like to match the two and next i will output in excel file.
I tested this code but all the results do not appear to me:
while(($row = mysqli_fetch_array($result)) && ($row2 = mysqli_fetch_array($result2)) )
{
For answer:
db:
1) id - name company - ecc //Table company
2) id_product - product - id_company //Table product
Output excel:
Client 1 - id
Client 2 - id
Name | another information
Client 1 | ecc...
Client 2 | ecc...
Php:
$result = mysqli_query($connect, $query); // FIRST CONNECT TABLE
$result2 = mysqli_query($connect, $query2); // SECOND CONNECT TABLE
if(mysqli_num_rows($result2) && mysqli_num_rows($result)> 0)
{
$output2 .= '
<table class="table" id="table" bordered="1">
';
while($row2 = mysqli_fetch_array($result2))
{
$output2 .= '
<tr>
<td class="grassetto">Company:</td>
<td class="grassetto">'. $row2["id"].'-'. $row2["nomeazienda"].'</td>
</tr>
<tr>
<td class="grassetto">ID:</td>
<td class="grassetto">'. $mese.'/'.$anno.'</td>
</tr>
';
}
$output2 .= '</table>';
$output .= '
<table class="table ops" id="table" border="1">
<tr>
<th>Name Company</th>
<th>Another information</th>
</tr>
';
while($row = mysqli_fetch_array($result))
{
$output .= '
<tr>
<td align="left">'. $row['id_azienda'] . '</td>
<td align="left">'. $row['nr'] . '</td>
</tr>
';
}
$output .= '</table>';
header('Content-Type: application/xls');
header('Content-Disposition: attachment; filename=download.xls');
header("Pragma: no-cache");
header("Expires: 0");
echo $output2. "\n<br>" .$output."\n";
}
So in second output when i call $result i need to compare ID/ID_COMPANY and write a company name
Edit 2:
That is main query
$query = 'SELECT * FROM products WHERE id_company in ('.$company.') AND product ="'.$products.'"';
}else{
$query = 'SELECT * FROM products WHERE id_company IN ('.$company.') AND product ="'.$products.'" AND last_check LIKE "%'.$anno.'-'.$mese.'%"';
}
$query2 = 'SELECT * FROM company WHERE id in ('.$company.')';
how do you integrate this code?

Answer 1

Use a simple JOIN to get the company name from the company ID in the product table in a single query.
$query = "
SELECT c.name, p.product, ...
FROM company AS c
JOIN product AS p ON c.id = p.id_company
WHERE c.id in ($company) AND p.product = '$product'";