Code optimization

It is possible to reduce code size by some twenty lines, using regular expressions.
in includes/functions_showthread.php, whole fragment

		$admgroups=explode("|",$vboptions['warn_admingroups']);
		$modgroups=explode("|",$vboptions['warn_modgroups']);
		$smodgroups=explode("|",$vboptions['warn_smodgroups']);
		
		if($admgroups[0])
		{
			foreach($admgroups as $adm)
			{
				if ($adm==$bbuserinfo['usergroupid'])
				{
					$useradmin=1;
				}
			}
		}
		if($modgroups[0])
		{
			foreach($modgroups as $mod)
			{
				if ($mod==$bbuserinfo['usergroupid'])
				{
					$usermod=1;
				}
			}
		}
		if($smodgroups[0])
		{
			foreach($smodgroups as $smod)
			{
				if ($smod==$bbuserinfo['usergroupid'])
				{
					$usersmod=1;
				}
			}
		}
		
		if($admgroups[0])
		{
			foreach($admgroups as $adm)
			{
				if ($adm==$userinfo['usergroupid'])
				{
					$postadmin=1;
				}
			}
		}
		if($modgroups[0])
		{
			foreach($modgroups as $mod)
			{
				if ($mod==$userinfo['usergroupid'])
				{
					$postmod=1;
				}
			}
		}
		if($smodgroups[0])
		{
			foreach($smodgroups as $smod)
			{
				if ($smod==$userinfo['usergroupid'])
				{
					$postsmod=1;
				}
			}
		}

could be replaced with

                $useradmin = preg_match("/^(.*|)?$bbuserinfo[usergroupid](|.*)?$/",$vboptions['warn_admingroups']);
                $postadmin = preg_match("/^(.*|)?$post[usergroupid](|.*)?$/",$vboptions['warn_admingroups']);

                $usermod = preg_match("/^(.*|)?$bbuserinfo[usergroupid](|.*)?$/",$vboptions['warn_modgroups']);
                $postmod = preg_match("/^(.*|)?$post[usergroupid](|.*)?$/",$vboptions['warn_modgroups']);

                $usersmod = preg_match("/^(.*|)?$bbuserinfo[usergroupid](|.*)?$/",$vboptions['warn_smodgroups']);
                $postsmod = preg_match("/^(.*|)?$post[usergroupid](|.*)?$/",$vboptions['warn_smodgroups']);

There's exactly the same code fragment in member.php which should use the similar treatment.

[sv1cec]

Thanks for the tip, I'll check it out.