Welcome to the Cookbook

checkbox(string $fieldName, array $options)

Creates a checkbox form element. This method also generates an associated hidden form input to force the submission of data for the specified field.

<?php echo $form->checkbox('done'); ?>

1. <?php echo $form->checkbox('done'); ?>

Will output:

<input type="hidden" name="data[User][done]" value="0" id="UserDone_" />
<input type="checkbox" name="data[User][done]" value="1" id="UserDone" />