首先我新建了一个数据库menu然后在menu里新建一个字段revoke
然后在向这个数据库插入一条记录时出错了：
// $sql = "insert into menu (id, username, parent_id, name, realname, allwriters, mainwriters, cwriters, cw_email, cw_phone, summary, keywords, status, revoke, feestatus, deadtime, url) values (NULL,'sujian', '$ctype', '$name','$cwriters','$allwriters','$cwriters','$cwriters',$cw_email','$cw_phone','$summary','$keywords','$status','$revoke','$feestatus','2012-12-04
14:42:09','http://www.baidu.com')";
最后发现是因为revoke是mysql数据库中给一个数据库赋权限的关键字，好久才发现这个问题，后来果断把revoke给替换了！！！！