Checkbox Array

// Add
<div class="checkbox checkbox-primary">
    <input type="hidden" name="id[]" value="<?php echo $facility_id; ?>"/>
    <input type="checkbox" value="1" name="check[<?=$facility_id;?>]">
    <label ><?php echo $f->facility_name; ?></label>
</div>

// Edit
<div class="checkbox checkbox-primary">
    <input type="hidden" name="idf[]" value="<?php echo $froom_id; ?>"/>
    <input type="checkbox" value="1" name="check[<?=$froom_id;?>]" <?php if ($f->froom_checked == 1) { echo 'checked'; } ?>>
    <label><?php echo $f->facility_name; ?></label>
</div>