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php问题，跪求各位大牛指点迷津

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Jun 20, 2016 pm 12:32 PM

<?phpif(!defined('IN_DISCUZ')) {	exit('Access Denied');}class plugin_qdkzcj {	function global_qdadd(){		global $_G;		$tablepre=$_G['config']['db']['1']['tablepre'];		@extract($_G['cache']['plugin']['qdkzcj']);						$_G['isqd']=$_G['qdday']=0;				$_G['todayq'] = DB::result_first("SELECT `todayq` FROM `{$tablepre}dsu_paulsignset` WHERE `id` ='1' ");				if(!$_G['uid']) return '';				$qiandaodb = DB::fetch_first("SELECT time FROM ".DB::table('dsu_paulsign')." WHERE uid='$_G[uid]'");		$htime = dgmdate($_G['timestamp'], 'H',$var['tos']);		$tdtime=strtotime(date('Y-m-d'));		if($qiandaodb['time']<$tdtime){			$_G['isqd']=0;		}else{			$_G['isqd']=1;		}		$_G['qdday']=DB::result_first("SELECT `lasted` FROM `{$tablepre}dsu_paulsign` WHERE `uid` ='{$_G['uid']}' LIMIT 0 , 1");		$_G['qmday']=DB::result_first("SELECT `mdays` FROM `{$tablepre}dsu_paulsign` WHERE `uid` ='{$_G['uid']}' LIMIT 0 , 1");		$_G['qtime']=DB::result_first("SELECT `time` FROM `{$tablepre}dsu_paulsign` WHERE `uid` ='{$_G['uid']}' LIMIT 0 , 1");				$_G['qqtime']=date('ymd',$_G['qtime'])==date('ymd',$_G['timestamp'])?date('H:i',$_G['qtime']):date('m-d',$_G['qtime']);			}}function qdbyuid($uid){	return DB::result_first("SELECT `lasted` FROM ".DB::table("dsu_paulsign")." WHERE `uid` ='{$uid}' LIMIT 0 , 1");}function qdbyuser($user){	$user=addslashes($user);	$uid=DB::result_first("select uid from ".DB::table("common_member")." where username='$user' limit 1");	return DB::result_first("SELECT `lasted` FROM ".DB::table("dsu_paulsign")." WHERE `uid` ='{$uid}' LIMIT 0 , 1");}?>

这段php代码做成插件启用以后，模板涉及到的变量就有效。把这个php文件直接引用到模板，变量却无效了。跪求大神帮我改一下，让它有效的在模板里引用

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