Php pagination

<?php
/* Setup page vars for display. */
    if ($page == 0) $page = 1;                  //if no page var is given, default to 1.
    $prev = $page - 1;                          //previous page is page - 1
    $next = $page + 1;                          //next page is page + 1
    $lastpage = ceil($total_pages/$limit);      //lastpage is = total pages / 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)
        {
            $pagination .= "<div class=\"pagination\">";
        //previous buttons
            if ($page > 1)
                $pagination.= "<a class='buttons' href=\"$targetpage?page=$prev\">previous</a>";
            else
                $pagination.= "<a class='disabled'><buttons disabled>previous</buttons></a>";

        //pages
        if ($lastpage < 7 + ($adjacents * 2))   //not enough pages to bother breaking it up
        {
            for ($counter = 1; $counter <= $lastpage; $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
                else
                    $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";
            }
        }
        elseif($lastpage > 5 + ($adjacents * 2))    //enough pages to hide some
        {
            //close to beginning; only hide later pages
            if($page < 1 + ($adjacents * 2))
            {
                for ($counter = 1; $counter < 1 + ($adjacents * 2); $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
                    else
                        $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";
                }
                $pagination.= "...";
                $pagination.= "<a class='buttons' href=\"$targetpage?page=$lpm1\">$lpm1</a>";
                $pagination.= "<a class='buttons' href=\"$targetpage?page=$lastpage\">$lastpage</a>";
            }
            //in middle; hide some front and some back
            elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
            {
                $pagination.= "<a class='buttons' href=\"$targetpage?page=1\"> 1 </a>";
                $pagination.= "<a class='buttons' href=\"$targetpage?page=2\"> 2 </a>";
                $pagination.= "...";
                for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
                    else
                        $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";
                }
                $pagination.= "...";
                $pagination.= "<a class='buttons' href=\"$targetpage?page=$lpm1\">$lpm1</a>";
                $pagination.= "<a class='buttons' href=\"$targetpage?page=$lastpage\">$lastpage</a>";
            }
            //close to end; only hide early pages
            else
            {
                $pagination.= "<a href=\"$targetpage?page=1\">1</a>";
                $pagination.= "<a href=\"$targetpage?page=2\">2</a>";
                $pagination.= "...";
                for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<a class='current'><buttons style='background-color:#CEF6F5'>$counter</buttons></a>";
                    else
                        $pagination.= "<a class='buttons' href=\"$targetpage?page=$counter\">$counter</a>";
                }
            }
        }

        //next buttons
        if ($page < $counter - 1)
            $pagination.= "<a class='buttons' href=\"$targetpage?page=$next\">next</a>";
        else
            $pagination.= "<a class='buttons'>next</a>";
        $pagination.= "</div>\n";
    }
    ?>