外键约束 type_id只能定义 但这样前台显示不了
//$_POST['type_id'] = 11;
$data = array(
'type_id' => intval(P('type_id')),
'title' => P('title'),
'zhaiyao' => P('zhaiyao'),
'body' => P('body'),
'created_on' => P('created_on'),
'yid' => '1',
'hot' => intval(P('hot'))
);