Unable to show checked radio button inside table - php

Question

I am trying to get a radio button checked based on the data that was passed from the server to the view. However I cannot get the radio button to be checked inside a bootstrap table. The following is my code:
<tbody>
<?php
foreach($results as $row)
{
?>
<tr>
<td><?php echo $row->productCoverNoteNo ?></td>
<td><?php echo $row->productClass ?></td>
<td><?php echo $row->productName ?></td>
<td><?php echo $row->productPolicyNo ?></td>
<td>
<input type="radio" name="tbx_paymentStatus" id="paid" value="PAID" <?php if ($row->productPaymentStatus == "UNPAID"){ echo "checked='checked'"; }?> />
<label for="paid">Paid</label></br>
<input type="radio" name="tbx_paymentStatus" id="unpaid" value="UNPAID" <?php if ($row->productPaymentStatus == "PAID"){ echo "checked='checked'"; }?> />
<label for="unpaid">Unpaid</label>
</td>
<td><a title="Edit this customer product" href="<?php echo base_url("customerProduct/editCustomerProduct/$row->productCoverNoteNo") ?>"><i class="fa fa-pencil fa-lg"></i></a>
| <a title="View endorsements of this customer product" href="<?php echo base_url("endorsement/viewEndorsement/$row->productCoverNoteNo") ?>"><i class="fa fa-book fa-lg"></i></a></td>
</tr>
<?php echo($row->productPaymentStatus);
}
?>
</tbody>

Answer 1

Try this:
<input type="radio" name="tbx_paymentStatus" id="paid" value="PAID"
<?php if ($row->productPaymentStatus == "UNPAID"){ ?> checked='checked' <?php }?> />