php下获取Discuz论坛登录用户名、用户组、用户ID等信息的实现代码

include_once("../discuz/include/common.inc.php");
$CTDF_USERINFO = array();
$CTDF_USERINFO["sid"] = $sid;
$CTDF_USERINFO["uid"] = $discuz_uid;
$CTDF_USERINFO["user"] = $discuz_user;
if ($discuz_uid == 0)
{
$CTDF_USERINFO["user"] = "guest_" . $sid;
}
$CTDF_USERINFO["groupid"] = $groupid;
/**
* clear discuz variables
*/
$reserved_arr = array("GLOBALS", "_POST", "_GET", "_COOKIE", "_FILES", "_SERVER", "_ENV", "_REQUEST", "CTDF_USERINFO", "reserved_arr");
foreach ($GLOBALS as $key => $value)
{
if (!in_array($key, $reserved_arr))
{
unset($GLOBALS[$key]);
}
}
unset($reserved_arr, $value);