How to get Data from table in twig by checking a checkbox

I created a table in twig template. In the first Column you can check a checkbox. After checking checkbox it should remove the row. My problem is how I can get the Data to remove it.

Here is my table

<table class="table table-bordered table-striped table-hover">
      <thead>
          <tr>
                  <th> <label for="checbox">Check</label></th>
                  <th>id</th>
                  <th>Name</th>
                  <th>Age</th>  
          </tr>
      </thead>
      <tbody>
          


      </tbody>
  </table>

 if(isset($_POST['checkBox'])== 'true'){

        $products = $_POST['??????'];


        $zl = 0;
        foreach ($products as $pr)
        {
          $em = $this->getDoctrine ()->getManager ();
          $pr = $em->getRepository('UserBundle:Products')->find($pr);
          $user->removeProduct($pr);
          ++$zl;
        }


        $em->persist($user);
        $em->flush();

}

How I can get the Data? $products = $_POST['??????']; I don"t know which parameter I have to put here to get the Data from the selected checkbox.