public function add()
{
//分类添加的表单页面
$str = getTypen(0);
$this->assign('str', $str);
$this->display();
}
function getTypen($fid = 0, $num = 0)
{
$mOb = M("type");
$arr = $mOb->where("fid={$fid}")->select();
$optionStr = "";
//产生缩进字符串 --
$indentStr = str_repeat("--", $num);
$num++;
foreach ($arr as $v) {
$optionStr .= "<option value='{$v['id']}'>{$indentStr}{$v['tname']}</option>";
//看一看，有没有子类,自己调用自己
$sonStr = getTypen($v['id'], $num);
$optionStr .= $sonStr;
}
return $optionStr;
}
