How to insert looping checked box value into db?

This is my code and attached the format i need please check it.

INDEX.CTP

<div>

<?php echo $this->Form->Create('Schedule'); 

    $appday = array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday');

        $apptime = array('01:00','02:00','03:00','04:00','05:00','06:00','07:00','08:00','09:00','10:00','11:00','12:00','13:00','14:00','15:00','16:00','17:00','18:00','19:00','20:00','21:00','22:00','23:00');

     ?>

     <table>

      <tr><td></td>

        <?php  

        for($k=0; $k<23; $k++) {

            echo '<td>'.$apptime[$k].'</td>';

            }

            echo '</tr>'; 

        ?>

        </tr>

     <?php   

        for($i=0; $i<7; $i++) {

        echo '<tr><td>'.$appday[$i].'</td>';

            for($j=0; $j<23; $j++) {

     ?>

            <td>

            <?php

                echo $this->Form->checkbox($appday[$i].'.'.$apptime[$j],array('hiddenfield' =>false));

                ?>

            </td>

     <?php       }

            echo '</tr>';

        }

     ?>

     </table>

    <?php

    echo $this->Form->end('Submit');

    ?>

</div>

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