这段代码如何加?

本题是关于php做的cms管理系统discuz的问题,所以回答本题要搞过discuz的人.
问题是这样:我想把系统自带的尾部统计在线人数的代码放在头部,所以我就复制了这段代码到头部中,但是奇怪的是显示为乱码,起码以为是条件判断的原因,后来多次检查,感觉不是.
下面的代码我是我复制的,不知为啥放在head.htm中就是不行呢,应该如何写才是正确的呢?

<!--{if empty($gid) && $_G['setting']['whosonlinestatus']}-->			<div id="online" class="bm oll">				<div class="bm_h">				<!--{if $detailstatus}-->					<span class="o"><a href="forum.php?showoldetails=no#online" title="{lang spread}"><img src="/static/imghw/default1.png"  data-src="{IMGDIR}/collapsed_no.gif"  class="lazy"   alt="{lang spread}" /></a></span>					<h3 id="strong-a-nbsp-href-home-php-mod-space-do-friend-view-online-type-member-lang-nbsp-onlinemember-a-strong-span-nbsp-class-xs-nbsp-strong-onlinenum-strong-nbsp-lang-nbsp-onlines-nbsp-strong-membercount-strong-nbsp-lang-nbsp-index-members-strong-invisiblecount-strong-nbsp-lang-nbsp-index-invisibles-strong-guestcount-strong-nbsp-lang-nbsp-index-guests-nbsp-lang-nbsp-index-mostonlines-nbsp-strong-onlineinfo-strong-nbsp-lang-nbsp-on-nbsp-strong-onlineinfo-strong-span">						<strong><a href="home.php?mod=space&do=friend&view=online&type=member">{lang onlinemember}</a></strong>						<span class="xs1">- <strong>$onlinenum</strong> {lang onlines}						- <strong>$membercount</strong> {lang index_members}(<strong>$invisiblecount</strong> {lang index_invisibles}),						<strong>$guestcount</strong> {lang index_guests}						- {lang index_mostonlines} <strong>$onlineinfo[0]</strong> {lang on} <strong>$onlineinfo[1]</strong>.</span>					</h3>				<!--{else}-->					<!--{if empty($_G['setting']['sessionclose'])}-->						<span class="o"><a href="forum.php?showoldetails=yes#online" title="{lang spread}"><img src="/static/imghw/default1.png"  data-src="{IMGDIR}/collapsed_yes.gif"  class="lazy"   alt="{lang spread}" /></a></span>					<!--{/if}-->					<h3 id="strong-if-nbsp-empty-G-setting-whosonlinestatus-lang-nbsp-onlinemember-else-a-nbsp-href-home-php-mod-space-do-friend-view-online-type-member-lang-nbsp-onlinemember-a-if-strong-span-nbsp-class-xs-nbsp-lang-nbsp-total-nbsp-strong-onlinenum-strong-nbsp-lang-nbsp-onlines-if-nbsp-membercount-nbsp-strong-membercount-strong-nbsp-lang-nbsp-index-members-strong-guestcount-strong-nbsp-lang-nbsp-index-guests-if-nbsp-lang-nbsp-index-mostonlines-nbsp-strong-onlineinfo-strong-nbsp-lang-nbsp-on-nbsp-strong-onlineinfo-strong-span">						<strong>							<!--{if !empty($_G['setting']['whosonlinestatus'])}-->								{lang onlinemember}							<!--{else}-->								<a href="home.php?mod=space&do=friend&view=online&type=member">{lang onlinemember}</a>							<!--{/if}-->						</strong>						<span class="xs1">- {lang total} <strong>$onlinenum</strong> {lang onlines}						<!--{if $membercount}-->- <strong>$membercount</strong> {lang index_members},<strong>$guestcount</strong> {lang index_guests}<!--{/if}-->						- {lang index_mostonlines} <strong>$onlineinfo[0]</strong> {lang on} <strong>$onlineinfo[1]</strong>.</span>					</h3>				<!--{/if}-->				</div>			<!--{if $_G['setting']['whosonlinestatus'] && $detailstatus}-->				<dl id="onlinelist" class="bm_c">					<dt class="ptm pbm bbda">$_G[cache][onlinelist][legend]</dt>					<!--{if $detailstatus}-->						<dd class="ptm pbm">						<ul class="cl">						<!--{if $whosonline}-->							<!--{loop $whosonline $key $online}-->								<li title="{lang time}: $online[lastactivity]">								<img src="/static/imghw/default1.png"  data-src="{STATICURL}image/common/$online[icon]"  class="lazy"   alt="icon" />								<!--{if $online['uid']}-->									<a href="home.php?mod=space&uid=$online[uid]">$online[username]</a>								<!--{else}-->									$online[username]								<!--{/if}-->								</li>							<!--{/loop}-->						<!--{else}-->							<li   style="max-width:90%">{lang online_only_guests}</li>						<!--{/if}-->						</ul>					</dd>					<!--{/if}-->				</dl>			<!--{/if}-->			</div>		<!--{/if}-->

回复讨论(解决方案)

下图是复制上面代码后的结果

清缓存看看。

清缓存看看。

请缓存这是最起码的常识吧!

统计在线人数，那是首页的功能，如：$onlinenum，$invisiblecount等，都是在\source\module\forum\forum_index.php里面定义的
而header.htm是所有页面都要引用的，里面的变量都是在初始化的时候取出放到了$_G里面，所以，你直接copy的代码不生效
有两种办法：
1>在source\class\discuz\discuz_application.php中初始化的时候查询数据库，并放到$_G中(不建议新手这样做)
2>在header.htm中调用一个函数，如：，getnolineinfo()方法在source\function\function_core.php中自己定义，里面具体的实现代码，请参考source\module\forum\forum_index.php中178行左右的if里面的代码