discuz
discuz X2.5 upload/index.php代码如下，主说针对运行步骤（架构思路）说明一下，越详细越好，非常感谢！！！
<?php/** * [Discuz!] (C)2001-2099 Comsenz Inc. * This is NOT a freeware, use is subject to license terms * * $Id: index.php 27617 2012-02-07 08:24:14Z monkey $ */if(!empty($_SERVER['QUERY_STRING']) && is_numeric($_SERVER['QUERY_STRING'])) { $_ENV['curapp'] = 'home'; $_GET = array('mod'=>'space', 'uid'=>$_SERVER['QUERY_STRING']);} else { $url = ''; $domain = $_ENV = array(); $jump = false; @include_once './data/sysdata/cache_domain.php'; $_ENV['domain'] = $domain; if(empty($_ENV['domain'])) { $_ENV['curapp'] = 'forum'; } else { $_ENV['defaultapp'] = array('portal.php' => 'portal', 'forum.php' => 'forum', 'group.php' => 'group', 'home.php' => 'home'); $_ENV['hostarr'] = explode('.', $_SERVER['HTTP_HOST']); $_ENV['domainroot'] = substr($_SERVER['HTTP_HOST'], strpos($_SERVER['HTTP_HOST'], '.')+1); if(!empty($_ENV['domain']['app']) && is_array($_ENV['domain']['app']) && in_array($_SERVER['HTTP_HOST'], $_ENV['domain']['app'])) { $_ENV['curapp'] = array_search($_SERVER['HTTP_HOST'], $_ENV['domain']['app']); if($_ENV['curapp'] == 'mobile') { $_ENV['curapp'] = 'forum'; if(@$_GET['mobile'] != 'no') { @$_GET['mobile'] = 'yes'; } } if($_ENV['curapp'] == 'default' || !isset($_ENV['defaultapp'][$_ENV['curapp'].'.php'])) { $_ENV['curapp'] = ''; } } elseif(!empty($_ENV['domain']['root']) && is_array($_ENV['domain']['root']) && in_array($_ENV['domainroot'], $_ENV['domain']['root'])) { $_G['setting']['holddomain'] = $_ENV['domain']['holddomain'] ? $_ENV['domain']['holddomain'] : array('www'); $list = $_ENV['domain']['list']; if(isset($list[$_SERVER['HTTP_HOST']])) { $domain = $list[$_SERVER['HTTP_HOST']]; $id = intval($domain['id']); switch($domain['idtype']) { case 'subarea': $_ENV['curapp'] = 'forum'; $_GET['gid'] = $id; break; case 'forum': $_ENV['curapp'] = 'forum'; $_GET['mod'] = 'forumdisplay'; $_GET['fid'] = $id; break; case 'topic': $_ENV['curapp'] = 'portal'; $_GET['mod'] = 'topic'; $_GET['topicid'] = $id; break; case 'channel': $_ENV['curapp'] = 'portal'; $_GET['mod'] = 'list'; $_GET['catid'] = $id; break; } } elseif(count($_ENV['hostarr']) > 2 && $_ENV['hostarr'][0] != 'www' && !checkholddomain($_ENV['hostarr'][0])) { $_ENV['prefixdomain'] = addslashes($_ENV['hostarr'][0]); $_ENV['domainroot'] = addslashes($_ENV['domainroot']); require_once './source/class/class_core.php'; C::app()->init_setting = true; C::app()->init_user = false; C::app()->init_session = false; C::app()->init_cron = false; C::app()->init_misc = false; C::app()->init(); $jump = true; $domain = C::t('common_domain')->fetch_by_domain_domainroot($_ENV['prefixdomain'], $_ENV['domainroot']); $apphost = $_ENV['domain']['app'][$domain['idtype']] ? $_ENV['domain']['app'][$domain['idtype']] : $_ENV['domain']['app']['default']; $apphost = $apphost ? 'http://'.$apphost.'/' : ''; switch($domain['idtype']) { case 'home': if($_G['setting']['rewritestatus'] && in_array('home_space', $_G['setting']['rewritestatus'])) { $url = rewriteoutput('home_space', 1, $apphost, $domain['id']); } else { $url = $apphost.'home.php?mod=space&uid='.$domain['id']; } break; case 'group': if($_G['setting']['rewritestatus'] && in_array('group_group', $_G['setting']['rewritestatus'])) { $url = rewriteoutput('group_group', 1, $apphost, $domain['id']); } else { $url = $apphost.'forum.php?mod=group&fid='.$domain['id'].'&page=1'; } break; } } } else { $jump = true; } if(empty($url) && empty($_ENV['curapp'])) { if(!empty($_ENV['domain']['defaultindex']) && !$jump) { if($_ENV['defaultapp'][$_ENV['domain']['defaultindex']]) { $_ENV['curapp'] = $_ENV['defaultapp'][$_ENV['domain']['defaultindex']]; } else { $url = $_ENV['domain']['defaultindex']; } } else { if($jump) { $url = empty($_ENV['domain']['app']['default']) ? (!empty($_ENV['domain']['defaultindex']) ? $_ENV['domain']['defaultindex'] : 'forum.php') : 'http://'.$_ENV['domain']['app']['default']; } else { $_ENV['curapp'] = 'forum'; } } } }}if(!empty($url)) { $delimiter = strrpos($url, '?') ? '&' : '?'; if(isset($_GET['fromuid']) && $_GET['fromuid']) { $url .= $delimiter.'fromuid='.$_GET['fromuid']; } elseif(isset($_GET['fromuser']) && $_GET['fromuser']) { $url .= $delimiter.'fromuser='.$_GET['fromuser']; } header("HTTP/1.1 301 Moved Permanently"); header("location: $url");} else { require './'.$_ENV['curapp'].'.php';}function checkholddomain($domain) { global $_G; $domain = strtolower($domain); if(preg_match("/^[^a-z]/i", $domain)) return true; $holdmainarr = empty($_G['setting']['holddomain']) ? array('www') : explode('|', $_G['setting']['holddomain']); $ishold = false; foreach ($holdmainarr as $value) { if(strpos($value, '*') === false) { if(strtolower($value) == $domain) { $ishold = true; break; } } else { $value = str_replace('*', '.*?', $value); if(@preg_match("/$value/i", $domain)) { $ishold = true; break; } } } return $ishold;}?>$_ENV['curapp'] = 'home'; 不知道是什么意思
