代码解读--首页面

/*
 [UCenter Home] (C) 2007-2008 Comsenz Inc.
 $Id: index.php 10953 2009-01-12 02:55:37Z liguode $
*/

include_once('./common.php');

if(is_numeric($_SERVER['QUERY_STRING'])) {
 showmessage('enter_the_space', "space.php?uid=$_SERVER[QUERY_STRING]", 0);
}

//二级域名
if(!isset($_GET['do']) && $_SCONFIG['allowdomain']) {
 $hostarr = explode('.', $_SERVER['HTTP_HOST']);
 $domainrootarr = explode('.', $_SCONFIG['domainroot']);
 if(count($hostarr) > 2 && count($hostarr) > count($domainrootarr) && $hostarr[0] != 'www' && !isholddomain($hostarr[0])) {
  showmessage('enter_the_space', $_SCONFIG['siteallurl'].'space.php?domain='.$hostarr[0], 0);
 }
}

if($_SGLOBAL['supe_uid']) {
 //已登录，直接跳转个人首页
 showmessage('enter_the_space', 'space.php?do=home', 0);
}

//最后登录名
$membername = empty($_SCOOKIE['loginuser'])?'':sstripslashes($_SCOOKIE['loginuser']);
$wheretime = $_SGLOBAL['timestamp']-3600*24*30;

//总会员
$spacecount = $_SGLOBAL['db']->result($_SGLOBAL['db']->query("SELECT COUNT(*) FROM ".tname('space')), 0);

//获得缓存
$caches = data_get('index_cache', 1);
$caches['dateline'] = intval($caches['dateline']);
if($_SCONFIG['networkupdate'] && $_SGLOBAL['timestamp'] - $caches['dateline'] < $_SCONFIG['networkupdate']) {
 @$caches['datavalue'] = unserialize($caches['datavalue']);
 @extract($caches['datavalue']);
 
} else {
 
 //热门日志
 $bloglist = array();
 $query = $_SGLOBAL['db']->query("SELECT blogid,subject,uid,username FROM ".tname('blog')." WHERE friend='0' AND dateline>'$wheretime' ORDER BY replynum DESC LIMIT 0,11");
 while ($value = $_SGLOBAL['db']->fetch_array($query)) {
  $bloglist[] = $value;
 }
 
 //最近更新的相册
 $albumlist = array();
 $query = $_SGLOBAL['db']->query("SELECT albumid,albumname,picnum,pic,picflag,uid,username FROM ".tname('album')." WHERE friend='0' AND picnum>0 ORDER BY updatetime DESC LIMIT 0,7");
 while ($value = $_SGLOBAL['db']->fetch_array($query)) {
  $value['pic'] = mkpicurl($value, 1);
  $albumlist[] = $value;
 }
 
 //大家的最新动态
 $feedlist = array();
 $query = $_SGLOBAL['db']->query("SELECT * FROM ".tname('feed')." WHERE friend='0' ORDER BY dateline DESC LIMIT 0,10");
 while ($value = $_SGLOBAL['db']->fetch_array($query)) {
  realname_set($value['uid'], $value['username']);
  $feedlist[] = $value;
 }
 
 //热门群组
 $mtaglist = $threadlist = array();
 $query = $_SGLOBAL['db']->query("SELECT tagid,tagname,membernum,pic FROM ".tname('mtag')." ORDER BY membernum DESC LIMIT 0,2");
 while ($value = $_SGLOBAL['db']->fetch_array($query)) {
  if(empty($value['pic'])) {
   $value['pic'] = 'image/nologo.jpg';
  }
  $mtaglist[] = $value;
  
  //最新话题
  $query2 = $_SGLOBAL['db']->query("SELECT tid,subject,uid,username FROM ".tname('thread')." WHERE tagid='$value[tagid]' ORDER BY dateline DESC LIMIT 0,3");
  while ($thread = $_SGLOBAL['db']->fetch_array($query2)) {
   $threadlist[$value['tagid']][] = $thread;
  }
 }
 
 //热门空间
 $spacelist = array();
 $query = $_SGLOBAL['db']->query("SELECT uid,username,name,namestatus FROM ".tname('space')."
  WHERE updatetime>'$wheretime' ORDER BY viewnum DESC LIMIT 0,6");
 while ($value = $_SGLOBAL['db']->fetch_array($query)) {
  realname_set($value['uid'], $value['username'], $value['name'], $value['namestatus']);//实名
  $spacelist[] = $value;
 }
 
 //好玩的应用
 $myapplist = $onlielist = array();
 if($_SCONFIG['my_status']) {
  $query = $_SGLOBAL['db']->query("SELECT appid,appname FROM ".tname('myapp')." WHERE flag>=0 ORDER BY flag DESC, displayorder LIMIT 0,5");
  while ($value = $_SGLOBAL['db']->fetch_array($query)) {
   $myapplist[] = $value;
  }
 } else {
  $query = $_SGLOBAL['db']->query("SELECT uid,username FROM ".tname('session')." ORDER BY lastactivity DESC LIMIT 0,5");
  while ($value = $_SGLOBAL['db']->fetch_array($query)) {
   realname_set($value['uid'], $value['username']);
   $onlinelist[] = $value;
  }
 }

 //缓存
 data_set('index_cache', array(
  'bloglist' => $bloglist,
  'albumlist' => $albumlist,
  'feedlist' => $feedlist,
  'mtaglist' => $mtaglist,
  'threadlist' => $threadlist,
  'spacelist' => $spacelist,
  'myapplist' => $myapplist,
  'onlinelist' => $onlinelist,
  '_SN' => $_SN
 ));
}

//图片幻灯
$piclist = array();
@include_once(S_ROOT.'./data/data_network.php');
if(empty($netcache['piclist'])) {
 $query = $_SGLOBAL['db']->query("SELECT p.* FROM ".tname('pic')." p, ".tname('album')." a
  WHERE a.friend='0' AND a.albumid=p.albumid
  ORDER BY p.dateline DESC LIMIT 0,5");
 while ($value = $_SGLOBAL['db']->fetch_array($query)) {
  $value['pic'] = mkpicurl($value, 0);
  $value['title'] = getstr($value['title'], 50, 0, 1, 0, 0, -1);
  $piclist[] = $value;
 }
} else {
 $piclist = $netcache['piclist'];
}

//获取实名
realname_get();

//格式化动态
foreach ($feedlist as $key => $value) {
 $feedlist[$key] = mkfeed($value);
}

include template('index');

?>

首先include_once包涵common.php文件，common.php用于初始化页面所需的信息，如获取程序存放的路径，检查是否安装完毕，如果没有安装完全则转至安装页面，……这里先不详细探讨，要是用到了common.php页面的相关信息在来看看。