解决Discuz后台登陆卡死、50x等问题

Discuz 基本已经放弃更新了，处于半废弃状态，出现了各种问题；现在由于它的云平台、在线更新等功能废弃，但是代码未清理开始导致用户网站出现各种小问题，近期更是直接导致后台登陆要爆卡5分钟才能登陆，真是QNMDB，

现在提供解决方法：

定位文件：

/source/admincp/admincp_main.php

37行左右，新版本、补丁检测提醒导致后台登陆卡死，注释掉即可，找到类似以下代码：

    if($_G['uid'] && $_G['member']['allowadmincp'] == 1 && ($_G['setting']['showpatchnotice'] == 1 || !isset($_G['cookie']['checkpatch']))) {
    $discuz_patch = new discuz_patch();
    if($_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'] && $_G['member']['allowadmincp'] == 1 && !$shownotice && $_G['setting']['upgrade']) {
    $shownotice = '<div class="notice"><a href="'.$basescript.'?action=upgrade" id="notice">'.$lang['upgrade_right_now'].'</a></div>';
}
if($_G['uid'] && $_G['member']['allowadmincp'] == 1 && !isset($_G['cookie']['checkupgrade'])) {
    $discuz_upgrade = new discuz_upgrade();
    if($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);
}

注释掉即可：

    // if($_G['uid'] && $_G['member']['allowadmincp'] == 1 && ($_G['setting']['showpatchnotice'] == 1 || !isset($_G['cookie']['checkpatch']))) {
//     $discuz_patch = new discuz_patch();
//     if($_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'] && $_G['member']['allowadmincp'] == 1 && !$shownotice && $_G['setting']['upgrade']) {
//     $shownotice = '<div class="notice"><a href="'.$basescript.'?action=upgrade" id="notice">'.$lang['upgrade_right_now'].'</a></div>';
// }
// if($_G['uid'] && $_G['member']['allowadmincp'] == 1 && !isset($_G['cookie']['checkupgrade'])) {
//     $discuz_upgrade = new discuz_upgrade();
//     if($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);
// }

再登陆后台试试？