2个关于表单校验失败后 通过set_*绑定表单值的问题

btsw

各位，
小弟
1.在VIEW中通过 <?php echo form_checkbox('checkbox'); ?> 实现的checkbox 当表单校验失败后 如何通过 set_checkbox 绑定表单里checkbox的值啊？

2.在Controller中
$sec_array = array(
        ''        =>        '- Select a Question -',
        'What is the first name of your favorite uncle?'        =>        'What is the first name of your favorite uncle?',
        'Where did you meet your spouse?'        =>        'Where did you meet your spouse?',
        'What is your oldest cousin&#39;s name?'        =>        'What is your oldest cousin&#39;s name?',
);
$vars['sec'] = form_dropdown('sec', $sec_array, '0', 'id="sec"）；
在VIEW中通过 <?php echo $sec; ?> 实现的下拉选框 当表单校验失败后 如何通过 set_select 绑定表单里sec的值呢？

谢谢