PHP中include后，部分函数中需要global部分变量，例如下面global $db;问，如果不用global，怎么完美解决
<?php
/*
- 功能：检测用户登录
- 参数：
- 返回：boolen
/
function check_login() {
if(isset($_SESSION['shell'])==false) return false;
* global $db;**
$uid = $_SESSION['uid'];
$rel = $db->findall('members', "WHERE
uid='" . $uid . "'"); while ($row = $db->fetch_array($rel)) { foreach ($row as $key => $value) { $uinfo[$key] = $value; } } $ushell = md5($uinfo['password'] . $uinfo['role'] . DSLOG_ENC); if ($ushell == $_SESSION['shell']) { return true; } else { return false; } } ?>
