只针对Discuz!X3.4以下的版本前台打开卡慢、后台登陆卡死或504错误的问题。
形成原因：discuz的补丁升级和版本检查验证已经关闭。而x3.4以下仍然在验证和检查导致链接超时，引起后台打不开。解决办法有两个。
解决方法一，升级到x3.4，x3.4版本已经移除了相关代码。
解决方法二，修改代码：后台修改，文件source/admincp/admincp_main.php，删除以下代码大概37-60if($_G['uid'] && $_G'member' == 1 && ($_G['setting']['showpatchnotice'] == 1 || !isset($_G'cookie'))) {
$discuz_patch = new discuz_patch(); if($_G['setting']['showpatchnotice'] == 1) { $notice = $discuz_patch->fetch_patch_notice(); if($notice['data']) { $shownotice = '<div class="notice"><a href="'.$basescript.'?action=patch" id="notice">'.($notice['fixed'] ? $lang['patch_fix_complete'] : $lang['patch_fix_rigth_now']).'</a></div>'; } } if(!isset($_G['cookie']['checkpatch'])) { $discuz_patch->check_patch(); }}if($_G['uid'] && $_G'member' == 1 && !$shownotice && $_G'setting') {
$shownotice = '<div class="notice"><a href="'.$basescript.'?action=upgrade" id="notice">'.$lang['upgrade_right_now'].'</a></div>';}if($_G['uid'] && $_G'member' == 1 && !isset($_G'cookie')) {
$discuz_upgrade = new discuz_upgrade(); if($discuz_upgrade->check_upgrade()) { if(empty($shownotice)) { $shownotice = '<div class="notice"><a href="'.$basescript.'?action=upgrade" id="notice">'.$lang['upgrade_right_now'].'</a></div>'; } } dsetcookie('checkupgrade', 1, 7200);}
前台修改，打开文件sourcemodulemiscmisc_patch.php 将内容替换。
<?php
/**
Discuz!2001-2099 Comsenz Inc.This is NOT a freeware, use is subject to license terms*$Id: misc_patch.php 33690 2013-08-02 09:07:22Z nemohou $*/if(!defined('IN_DISCUZ')) {
exit('Access Denied');}
if($_GET['action'] == 'checkpatch') {
header('Content-Type: text/javascript'); exit;} elseif($_GET['action'] == 'patchnotice') {
include template('common/header_ajax'); include template('common/footer_ajax'); exit;} elseif($_GET['action'] == 'pluginnotice') {
include template('common/header_ajax'); include template('common/footer_ajax'); exit;} elseif($_GET['action'] == 'ipnotice') {
require_once libfile('function/misc'); include template('common/header_ajax'); if($_G['cookie']['lip'] && $_G['cookie']['lip'] != ',' && $_G['uid'] && $_G['setting']['disableipnotice'] != 1) { $status = C::t('common_member_status')->fetch($_G['uid']); $lip = explode(',', $_G['cookie']['lip']); $lastipConvert = convertip($lip[0]); $lastipDate = dgmdate($lip[1]); $nowipConvert = convertip($status['lastip']); $lastipConvert = process_ipnotice($lastipConvert); $nowipConvert = process_ipnotice($nowipConvert); if($lastipConvert != $nowipConvert && stripos($lastipConvert, $nowipConvert) == false && stripos($nowipConvert, $lastipConvert) == false) { $lang = lang('forum/misc'); include template('common/ipnotice'); } } include template('common/footer_ajax'); exit;}?>
修改方法就这些，大家可以测试一下。
更多文章请阅读
discuz程序修改
相关资源：Discuz! X3.4 简体中文版