Как задать оформление Тегам?

$tags_str = str_ireplace(", ", ",", $row['tags']);
$row['tags'] = explode( ",", $row['tags'] );
$tags_arr = explode( ",", $tags_str );

if (strpos ( $tpl->copy_template, "[tag:" ) !== false) {
	$tpl->copy_template = preg_replace_callback( "#\[tag\:(.+?)\](.+?)\[/tag\]#is", function($data) use ($tags_arr)
	{
		$tags_flip = array_flip($tags_arr);
		if(substr_count($data[1],","))
		{
			$tag_array = explode(",", $data[1]);
			foreach($tag_array as $value)
			{
				if(isset($tags_flip[$value]))
					return $data[2];
			}
		}
		else
		{
			if(isset($tags_flip[$data[1]]))
				return $data[2];
		}
	}, $tpl->copy_template );
}
if (strpos ( $tpl->copy_template, "{tag:" ) !== false) {
	$tpl->copy_template = preg_replace_callback( "#{tag\:(.+?)}#is", function($data) use ($tags_arr, $config, $PHP_SELF)
	{
		$data[1] = trim($data[1]);
		$tags_flip = array_flip($tags_arr);
		
		if(substr_count($data[1], ","))
		{
			$flag_check = false;
			$tag_array = explode(",", $data[1]);
			$tags = array();
			foreach($tag_array as $value)
			{
				if(isset($tags_flip[$value]))
				{
					$flag_check = true;
					if($config['allow_alt_url'])
						$tags[] = "<a href=\"" . $config['http_home_url'] . "tags/" . urlencode( $value ) . "/\">" . $value . "</a>";
					else
						$tags[] = "<a href=\"$PHP_SELF?do=tags&amp;tag=" . urlencode( $value ) . "\">" . $value . "</a>";
				}
			}
			if($flag_check)
				return implode(", ", $tags);
		}
		else
		{
			 if(isset($tags_flip[$data[1]]))
			 {
				if( $config['allow_alt_url'] )
					return "<a href=\"" . $config['http_home_url'] . "tags/" . urlencode( $data[1] ) . "/\">" . $data[1] . "</a>";
				else
					return "<a href=\"$PHP_SELF?do=tags&amp;tag=" . urlencode( $data[1] ) . "\">" . $data[1] . "</a>";
			 }
		}
	}, $tpl->copy_template );
}