Echo Title and Quantity when a checkbox is checked?

I have a form that lets the user select an item and input its quantity. My question is how do i echo it in the next page using session? For example if a user selects OPTION-1 with a quantity of 4, the next page would echo Selected:Option1 (4). Any kind of help would be greatly appreciated.

Here's my code:

          <label>
              <input type="checkbox" name="combos[]" class="drink" value="Title1" data-price="560" />
              <input min="0" max="20" type="number" class="quantity" name="comboscount[]" value="true" placeholder="0"/><p>Quantity</p>
          </label>

         <label>
          <input type="checkbox" name="combos[]" class="drink" value="Title2" data-price="322" />
          <input min="0" max="20" type="number" class="quantity" name="comboscount[]" value="true" placeholder="0"/><p>Quantity</p>
        </label>

        <label>
          <input type="checkbox" name="combos[]" class="drink" value="Title3" data-price="231" />
          <input min="0" max="20" type="number" class="quantity" name="comboscount[]" value="true" placeholder="0"/><p>Quantity</p>
        </label>

And here's how I process it in page 2:

$_SESSION['combos'] = $_POST['combos'];
$_SESSION['comboscount'] = $_POST['comboscount'];

   if(empty($_SESSION['combos'])) 
  {
   echo "Combos: <br />"."Nothing was selected."."<br /><br />";
  } 
  else
  {
   echo ("Combos: <br />");
   foreach ($_SESSION['combos'] as $key => $val) {
   echo $val." (".$_SESSION['comboscount'][$key].")<br />";
}
   echo ("<br />");
  }  

I got the array of title to list, but as for the quantity is empty. Did I miss something in the processing of the array?

Once again thanks.