General pagenation code

//function to return the pagination string
function getPaginationString($page = 1, $totalitems, $limit = 15, $adjacents = 1, $targetpage = "/", $pagestring = "?page=")
{       
    //defaults
    if(!$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)
    {   
        $pagination .= "<div class=\"pagination\"";
        if($margin || $padding)
        {
            $pagination .= " style=\"";
            if($margin)
                $pagination .= "margin: $margin;";
            if($padding)
                $pagination .= "padding: $padding;";
            $pagination .= "\"";
        }
        $pagination .= ">";
        //previous button
        if ($page > 1)
            $pagination .= "<a href=\"$targetpage$pagestring$prev\">« prev</a>";
        else
            $pagination .= "<span class=\"disabled\">« prev</span>";   
       
        //pages   
        if ($lastpage < 7 + ($adjacents * 2))    //not enough pages to bother breaking it up
        {   
            for ($counter = 1; $counter <= $lastpage; $counter++)
            {
                if ($counter == $page)
                    $pagination .= "<span class=\"current\">$counter</span>";
                else
                    $pagination .= "<a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a>";                   
            }
        }
        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)
                        $pagination .= "<span class=\"current\">$counter</span>";
                    else
                        $pagination .= "<a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a>";                   
                }
                $pagination .= "...";
                $pagination .= "<a href=\"" . $targetpage . $pagestring . $lpm1 . "\">$lpm1</a>";
                $pagination .= "<a href=\"" . $targetpage . $pagestring . $lastpage . "\">$lastpage</a>";       
            }
            //in middle; hide some front and some back
            elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
            {
                $pagination .= "<a href=\"" . $targetpage . $pagestring . "1\">1</a>";
                $pagination .= "<a href=\"" . $targetpage . $pagestring . "2\">2</a>";
                $pagination .= "...";
                for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
                {
                    if ($counter == $page)
                        $pagination .= "<span class=\"current\">$counter</span>";
                    else
                        $pagination .= "<a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a>";                   
                }
                $pagination .= "...";
                $pagination .= "<a href=\"" . $targetpage . $pagestring . $lpm1 . "\">$lpm1</a>";
                $pagination .= "<a href=\"" . $targetpage . $pagestring . $lastpage . "\">$lastpage</a>";       
            }
            //close to end; only hide early pages
            else
            {
                $pagination .= "<a href=\"" . $targetpage . $pagestring . "1\">1</a>";
                $pagination .= "<a href=\"" . $targetpage . $pagestring . "2\">2</a>";
                $pagination .= "...";
                for ($counter = $lastpage - (1 + ($adjacents * 3)); $counter <= $lastpage; $counter++)
                {
                    if ($counter == $page)
                        $pagination .= "<span class=\"current\">$counter</span>";
                    else
                        $pagination .= "<a href=\"" . $targetpage . $pagestring . $counter . "\">$counter</a>";                   
                }
            }
        }
       
        //next button
        if ($page < $counter - 1)
            $pagination .= "<a href=\"" . $targetpage . $pagestring . $next . "\">next »</a>";
        else
            $pagination .= "<span class=\"disabled\">next »</span>";
        $pagination .= "</div>\n";
    }
   
    return $pagination;
}