Dropdown with current value from Mysql

PHP Snippet 1:

<select name="vendors" id="vendors"  required>
                    
<?php
    include "dbConn.php";  
    $records = mysqli_query($db, "SELECT vendors FROM tools WHERE id=$id UNION SELECT vendoren FROM vendors");  

    while($data = mysqli_fetch_array($records))
    {
        echo "<option value='". $data['vendors'] ."'>" .$data['vendors'] ."</option>";  
    }   
?>  </select>