Tukukkk

I am new in programming and need some help. Any idea or solution will help me a lot
I have table organized

   <?php 





if (isset($_POST['submit'])) {

    $id = $_POST['id']; 

    $quantity = $_POST['quantity']; 

    $color = $_POST['color'];



    var_dump($id); // i get correct value

    var_dump($quantity); // I dont get correct, I get always same values no matter if they are checked or not

    var_dump($color);/ I dont get correct, I get always same values no matter if they are checked or not



    // For ex, if I check only Audi, $id = 1, $quantity() - will be data from all rows and same for $color

}

?>

<form id="form" name="" method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" >   

    <table class="table table-bordered" id="example2">

        <thead>

            <tr class="success"> 

                <th>#</th>

                <th>Name</th>

                <th>Quantity</th>           

                <th>Code</th>

                <th>Option</th>

            </tr>       

        </thead>

        <tbody>

            <tr>

                <td><input type="checkbox" class="form-control" name="id" value="1"></td>

                <td>Audi</td>

                <td><input type="text" name="quantity">120</td>

                <td>123456</td>

                <td>

                    <select name="color" name="color">

                        <option value="1">Black</option>

                        <option value="2">Red</option>

                        <option value="3">Green</option>

                        <option value="4">Silver</option>

                    </select>

                </td>

            </tr>

            <tr>

                <td><input type="checkbox" class="form-control" name="id" value="2"></td>

                <td>Mercedes</td>

                <td><input type="text" name="quantity">200</td>

                <td>112233</td>

                <td>

                    <select name="color" name="color">

                        <option value="1">Black</option>

                        <option value="2">Red</option>

                        <option value="3">Green</option>

                        <option value="4">Silver</option>

                    </select>

                </td>

            </tr>

            <tr>

                <td><input type="checkbox" class="form-control" name="id" value="3"></td>

                <td>Kia</td>

                <td><input type="text" name="quantity">50</td>

                <td>879</td>

                <td>

                    <select name="color" name="color">

                        <option value="1">Black</option>

                        <option value="2">Red</option>

                        <option value="3">Green</option>

                        <option value="4">Silver</option>

                    </select>

                </td>

            </tr>

            <tr>

                <td><input type="checkbox" class="form-control" name="id" value="4"></td>

                <td>Ford</td>

                <td><input type="text" name="quantity">120</td>

                <td>987</td>

                <td>

                    <select name="color" name="color">

                        <option value="1">Black</option>

                        <option value="2">Red</option>

                        <option value="3">Green</option>

                        <option value="4">Silver</option>

                    </select>

                </td>

            </tr>

        </tbody>

    </table>

</table>

<button type="submit" name="submit">Submit</button>

</form>

I am having trouble in getting correct data for checked row. In comments where php code is written I am having trouble in finding out how to do it correctly.
Once data is submitted to for, I need to get an array which holds data from checked row. If 5 rows are selected, I need to get 5 arrays.