好友体系
PW个人中心允许用户与用户进行互动，主要有添加好友，添加关注。可以通过邀请好友注册功能来扩大你的社区影响力，通过邀请链接注册的用户即自动加为好友。并可对好友进送生日祝福等。
好友的程序与目录如下：
Friend.php是好友的入口文件，负责分发请求。如果是自己登陆访问则请求到u/require/friend/my.php文件，如果是浏览其他用户信息则请求到u/require/friend/viewphp文件：
而模板在u/thems/default/ friend_开头的几个文件。
数据库：
朋友类型与关系记录表主要为 pw_friendtype与pw_friends，而好友数量粉丝数，及关注，记录在pw_memberdata表中，对用的字段为f_num,fans,follows, newfans是新加的粉丝数.
代码分析
一．我的关注
if ($type == 'attention') {
//加载好友service 见lib/friend/attention.class.php
$attentionSerivce = L::loadClass('Attention', 'friend'); /* @var $attentionSerivce
PW_Attention */
$updateSQL = array();
$count = $winddb['follows'];
//当关注的人数小于1000或多于10000000时从新查找数据库
if ($count < 1000 ||
$count > 10000000) {
$num = $attentionSerivce->countFollows($winduid);
if ($num != $count) {
$updateSQL['follows'] = $winddb['follows'] = $count = $num;
}
}
$page > ceil($count/$db_perpage) && $page = ceil($count/$db_perpage);
//得到关注列表
$attentions = $count ? $attentionSerivce->getFollowListInPage($winduid, $page, $db_perpage) : array();
$attentionedUids = $myAttentionUids = array();
foreach ($attentions as $attention) {
$attentionedUids[] =
$attention['uid'];
}
//得到我同时关注我的列表
$myAttentionUids = $attentionSerivce->getUidsInFansListByFriendids($winduid, $attentionedUids);
foreach ($attentions as $key => $attention) {
$attentions[$key]['attention'] = 1;
if (!in_array($attention['uid'], $myAttentionUids)) continue;
$attentions[$key]['attentionEach'] = 1;
}
//更新关注人员信息
if ($updateSQL) {
$userService
= L::loadClass('UserService', 'user'); /* @var $userService PW_UserService */
$userService->update($winduid, array(), $updateSQL);
}
$pages = numofpage($count,$page,ceil($count/$db_perpage),"{$thisbase}&");
//所有好友
$friendsAllUids = getFriendsIdArr($winduid);
二．我的粉丝
} elseif ($type == 'attentioned') {
//加载lib/friend/attention.class.php
$attentionSerivce = L::loadClass('Attention', 'friend'); /* @var $attentionSerivce
PW_Attention */
$updateSQL = array();
$count = $winddb['fans'];
//当粉丝的人数小于1000或多于10000000时从新查找数据库
if ($count < 1000 ||
$count > 10000000) {
//得到粉丝数量
$num = $attentionSerivce->countFans($winduid);
//如果pw_memberdata记录的粉丝数量不等于粉丝数，则更新数据库
if ($num != $count) {
$updateSQL['fans'] = $winddb['fans'] = $count = $num;
}
}
if ($winddb['newfans'] > 0) {
$updateSQL['newfans'] = $winddb['newfans'] = 0;
}
$page > ceil($count/$db_perpage) && $page = ceil($count/$db_perpage);
//得到粉丝列表
$attentions = $count ? $attentionSerivce->getFansListInPage($winduid, $page, $db_perpage) : array();
$attentionedUids = $myAttentionUids = array();
foreach ($attentions as $attention) {
$attentionedUids[] =
$attention['uid'];
}
//自己的粉丝中找出相互关注的人
$myAttentionUids = $attentionSerivce->getUidsInFollowListByFriendids($winduid, $attentionedUids);
foreach ($attentions as $key => $attention) {
$attentions[$key]['attention'] = 0;
if (!in_array($attention['uid'], $myAttentionUids)) continue;
$attentions[$key]['attentionEach'] = 1;
$attentions[$key]['attention'] = 1;
}
//更新pw_mamberdata表粉丝数
if ($updateSQL) {
$userService
= L::loadClass('UserService', 'user'); /* @var $userService PW_UserService */
$userService->update($winduid, array(), $updateSQL);
}
$pages = numofpage($count,$page,ceil($count/$db_perpage),"{$thisbase}&");
//所有好友
$friendsAllUids = getFriendsIdArr($winduid);
三．我的好友
} elseif ($type == 'my') {
$page = (int) S::getGP('page');
$ftid = (int)S::getGP('ftid');
$page < 1 && $page = 1;
$db_perpage = 12;
$ftype = $ftid == '-1' ? 0 : (is_numeric($ftid) && $ftid > 0 ? $ftid : null);
$friendType = array();
$count = $friendsNums =
$defaultTypeFriendNum = 0;
$friendsService = L::loadClass('Friend', 'friend'); /* @var $friendsService
PW_Friend */
list($friendsNums, $friendType,
$defaultTypeFriendNum) = $friendsService->getFriendsTypeAndNum($winduid);
//如果数据库记录的好友数如果和pw_memberdata表不一样则更新pw_memberdata表（因为可能缓存等原因使pw_memberdata没同步）
if ($friendsNums != $winddb['f_num']) {
$userService
= L::loadClass('UserService', 'user');
$userService->update($winduid, array(), array('f_num' => $friendsNums));
}
//得到分组好友个数
$count = (int)$friendsService->countUserFriends($u,$ftype);
$page > ceil($count/$db_perpage) && $page = ceil($count/$db_perpage);
//分组好友分页
$friends = $count ? $friendsService->findUserFriendsInPage($u, $page, $db_perpage, $ftype) : array();
$uids = array_keys($friends);
$attentionSerivce = L::loadClass('attention', 'friend'); /* @var $attentionSerivce
PW_Attention */
//得到好友是否关注自己
$myFansUids = $attentionSerivce->getUidsInFansListByFriendids($winduid, $uids);
foreach ($friends as $key => $friend) {
$attentions[$key]['attentionEach'] = 0;
if ($friend['attention'] && in_array($friend['uid'], $myFansUids)) {
$friends[$key]['attentionEach'] = 1;
}
}
//得到所有好友id
$friendsAllUids = getFriendsIdArr($winduid);
$pages = numofpage($count,$page,ceil($count/$db_perpage),"{$thisbase}ftid=$ftype&");
四．好友查找
} elseif ($type == 'find') {
S::gp(array('step', 'according'));
$db_perpage = 12;
$according = $according ?
$according : 'user';
${$according.'checked'} = 'selected="selected"';
//所有好友
$friendsAllUids = getFriendsIdArr($winduid);
if ($step == 2) {
S::gp(array('f_keyword', 'decode'));
!isset($f_keyword) && Showmsg('pse_input_keyword');
//关键词转义 见require/common.php pwConvert
$decode && $f_keyword = pwConvert($f_keyword, $db_charset,
'utf8');
if($according && !in_array($according,array('user','uid','email','tags'))){
showMsg("抱歉,搜索类型不存在");
}
$f_keyword
= strip_tags($f_keyword);
$count = 0;
$members = $myAttentionUids
= array();
$searchURL
= "u.php?a=friend&type=find";
//根据类型搜索，有用户名，UID,电子邮件，标签，4种方式
switch($according){
case "user" :
$searcherService = L::loadclass('searcher', 'search'); /* @var $searcherService PW_searcher */
$uids = $memberdata = $attentionData = array();
//根据关键词搜索用户返回数量及，用户信息 见lib/search/searcher.class.php searchUsers函数
//* 值得注意的是，搜索提供了sphinx与mysql搜索，默认如果sphinx未开启的话,会使用mysql搜索
//具体也就是$searcherService->searchUsers()最终调用的是 lib/search/search/mysql.search.php下面
//的searchUsers()函数
list($count,$users) = $searcherService->searchUsers($f_keyword,$page,$db_perpage);
$users
= $users ? $users : array();
foreach ($users as $user) {
$uids[] =
$user['uid'];
}
if ($uids) {
$userService = L::loadClass('UserService', 'user'); /* @var $userService PW_UserService */
//得到用户的基本信息包括pw_member及pw_memberdata表
foreach ($userService->getUsersWithMemberDataByUserIds($uids) as $rt) {
$memberdata[$rt['uid']] = $rt['thisvisit'];
}
$attentionSerivce = L::loadClass('attention', 'friend'); /* @var $attentionSerivce PW_Attention */
//得到自己关注的信息
$myAttentionsInfo = $attentionSerivce->getFollowListByFriendids($winduid, $uids);
foreach ($myAttentionsInfo as $myAttentions) {
$myAttentionUids[]
= $myAttentions['friendid'];
}
foreach($users as $key => $user) {
$user['thisvisit'] = $memberdata[$user['uid']];
list($user['face']) = showfacedesign($user['icon'], '1', 's');
in_array($user['uid'], $myAttentionUids) && $user['attention'] = 1;
$members[] = $user;
}
}
$members
&& $pages = ($count) ? numofpage($count,$page,ceil($count/$db_perpage),$searchURL."&f_keyword=".urlencode($f_keyword)."&step=2&",null,'',true) : '';
break;
//其他类型搜索雷同不再多过多讲解
前面已经说了好友的三大功能另外还有邀请朋友，好友生日列表，不在做代码解释。
我这边说说邀请的流程:
1) 在后台开启邀请注册才可以使用邀请功能。
后台设定邀请码可以使用的用户组，及购买的价格，可在：>>
3) 普通用户登录以后，需要根据设置的购买价格购买邀请码，然后就可以看到邀请链接了，通过类似: http://localhost/pw87/register.php?invcode=552391d69c9fa54c的链接注册用户后，其用户即成为你的好友。