Kohana helper collection

kohana-helper.php

<?php defined('SYSPATH') or die('No direct script access.');

class HELPER {

    /*
     * helper to load post from database
     * 
     * @param   int     4 digit ex. 2010
     * @param   int     without leading zero
     * @param   string  slug/permalink, if set then limit/offset will be ignore
     * @param   int     post status ex. draft,published,preview
     * @param   int     limit
     * @param   int     offset
     * @return  mixed   if query failed return FALSE else return Database_MySQL_Result
     */
    public static function load_post($year, $month = NULL, $slug = NULL, $status = 0, $limit = 0, $offset = 10)
    {
        if ( ! $year) 
        {
            return FALSE;
        }

        $format = '%Y';

        if ($month !== NULL)
        {
            $format .= '-%c';
            $year = $year.'-'.$month;
        }

	$post = DB::select()->from('posts')
		->where('status', '=', $status)
		->and_where('FROM_UNIXTIME("published_on", \''.$format.'\')', '=', ':format')
		->param(':format', $year);
		
	if ($slug !== NULL)
	{
		$post->and_where('slug', '=', ':slug')->param(':slug', $slug);
	}
	else
	{
		$post->order_by('published_on', 'DESC')->limit($limit)->offset($offset);
	}
		
	$post->as_object()->execute();

        return ($post AND count($post) > 0) ? $post : FALSE;
    }

	/*
	 * Extend HTML::style
	 * 
	 * @param	string	File name
	 * @param	array	Default attributes
	 * @param	string	Spesific browser logic/condition
	 * @param	mixed	Protocol to pass to URL::base()
	 * @param	boolean	Include the index page
	 * @return	string
	 */
	public static function style($file, array $attributes = NULL, $browser = NULL, $protocol = NULL, $index = FALSE)
	{
		$style = HTML::style($file,$attributes, $protocol, $index);
		
		if ($browser)
			return '<!--[if '.$browser.' ]>'.$style.'<![endif]-->';
		
		return $style;
		
	}
	
	/*
	 * Extend HTML::script
	 * 
	 * @param	string	File name
	 * @param	array	Default attributes
	 * @param	string	Spesific browser logic/condition
	 * @param	mixed	Protocol to pass to URL::base()
	 * @param	boolean	Include the index page
	 * @return	string
	 */
	public static function script($file, array $attributes = NULL, $browser = NULL, $protocol = NULL, $index = FALSE)
	{
		$script = HTML::script($file, $attributes, $protocol, $index);
		
		if ($browser)
			return '<!--[if '.$browser.' ]>'.$script.'<![endif]-->';
		
		return $script;
	}

	/**
	 * Builds & returns a variable containing the HTML code to display pagination links based on given params
	 *
	 * @param int $page - the current page
	 * @param int $totalitems - the number of items to paginate (not total number of pages)
	 * @param int $limit - the number of items per page
	 * @param int $adjacents - the number of page links to put adjacent to the current page
	 * @param string $targetpage - URL to the web page requiring pagination links e.g. /module/controller/action/id/abc123123/
	 * @param string $pagestring - the URL params to pass the new page value e.g. page/ (the number is inserted at the end of the string)
	 * @param string $cssClass - the class of the containing UL tag for the returned pagination
	 * @return void
	 * @author Stranger Studios, adapted by Rich Milns
	 * @see http://www.strangerstudios.com/sandbox/pagination/diggstyle.php
	 */
	public static function digg($page = 1, $totalitems, $limit = 15, $adjacents = 1, $targetpage = "/", $pagestring = "page/", $cssClass='pagination')
	{		
		//defaults
		if(!$adjacents) $adjacents = 1;
		if(!$limit) $limit = 15;
		if(!$page) $page = 1;
		if(!$targetpage) $targetpage = "/";

		//other vars
		$prev = $page - 1;									//previous page is page - 1
		$next = $page + 1;									//next page is page + 1
		$lastpage = ceil($totalitems / $limit);				//lastpage is = total items / items per page, rounded up.
		$lpm1 = $lastpage - 1;								//last page minus 1

		/* 
			Now we apply our rules and draw the pagination object. 
			We're actually saving the code to a variable in case we want to draw it more than once.
		*/
		$pagination = "";
		if($lastpage > 1)
		{	
			$pagination .= "<ul class=\"" . $cssClass . "\">".PHP_EOL;

			//previous button
			if ($page > 1) 
				$pagination .= "<li><a href=\"$targetpage$pagestring$prev\" class=\"prevnext\">« previous</a></li>".PHP_EOL;
			else
				$pagination .= "<li><a href=\"#\" class=\"prevnext disablelink\">« previous</a></li>".PHP_EOL;

			//pages	
			if ($lastpage < 7 + ($adjacents * 2))	//not enough pages to bother breaking it up
			{	
				for ($counter = 1; $counter <= $lastpage; $counter++)
				{
					if ($counter == $page)
						$pagination .= "<li><a href=\"#\" class=\"currentpage\">$counter</a></li>".PHP_EOL;
					else
						$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a></li>".PHP_EOL;
				}
			}
			elseif($lastpage >= 7 + ($adjacents * 2))	//enough pages to hide some
			{
				//close to beginning; only hide later pages
				if($page < 1 + ($adjacents * 3))		
				{
					for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
					{
						if ($counter == $page)
							$pagination .= "<li><a href=\"#\" class=\"currentpage\">$counter</a></li>".PHP_EOL;
						else
							$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a></li>".PHP_EOL;
					}
					$pagination .= "<li>...</li>".PHP_EOL;
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $lpm1 . "\">$lpm1</a></li>".PHP_EOL;
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $lastpage . "\">$lastpage</a></li>".PHP_EOL;
				}
				//in middle; hide some front and some back
				elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
				{
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . "1\">1</a></li>".PHP_EOL;
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . "2\">2</a></li>".PHP_EOL;
					$pagination .= "<li>...</li>".PHP_EOL;
					for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
					{
						if ($counter == $page)
							$pagination .= "<li><a href=\"#\" class=\"currentpage\">$counter</a></li>".PHP_EOL;
						else
							$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a></li>".PHP_EOL;
					}
					$pagination .= "<li>...</li>".PHP_EOL;
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $lpm1 . "\">$lpm1</a></li>".PHP_EOL;
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $lastpage . "\">$lastpage</a></li>".PHP_EOL;
				}
				//close to end; only hide early pages
				else
				{
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . "1\">1</a></li>".PHP_EOL;
					$pagination .= "<li><a href=\"" . $targetpage . $pagestring . "2\">2</a></li>".PHP_EOL;
					$pagination .= "<li>...</li>";
					for ($counter = $lastpage - (1 + ($adjacents * 3)); $counter <= $lastpage; $counter++)
					{
						if ($counter == $page)
							$pagination .= "<li><a href=\"#\" class=\"currentpage\">$counter</a></li>".PHP_EOL;
						else
							$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a></li>".PHP_EOL;
					}
				}
			}

			//next button
			if ($page < $counter - 1) 
				$pagination .= "<li><a href=\"" . $targetpage . $pagestring . $next . "\" class=\"prevnext\">next »</a></li>".PHP_EOL;
			else
				$pagination .= "<li><a href=\"#\" class=\"prevnext disablelink\">next »</a></li>".PHP_EOL;
			$pagination .= "</ul>".PHP_EOL;
		}

		return $pagination;

	}

}

doesn't work