<?
// Author:  Exceeder (Oliver Gueffroy)
// Webpage: http://freakstuff.de
// eMail:   dev@freakstuff.de
// Date:    28.09.2002
// Version: 1.0
// Purpose: A class which is able to display a page navigator pane

class pageNavigator
{
  var $baseuri;
  var $currentpage;
  var $perpage;
  var $totalcount;

  function pageNavigator($baseuri, $currentpage, $perpage, $totalcount)
  {
    $this->baseuri     = $baseuri;
    $this->currentpage = $currentpage;
    $this->perpage     = $perpage;
    $this->totalcount  = $totalcount;
  }

  function setBaseUri($baseuri)
  {
    $this->baseuri = $baseuri;
  }

  function setCurrentPage($pagenumber)
  {
    $this->currentpage = $pagenumber;
  }

  function setPerPage($perpage)
  {
    $this->perpage = $perpage;
  }

  function setTotalCount($totalcount)
  {
    $this->totalcount = $totalcount;
  }

  function isValidPage($pagenumber)
  {
    return checkRange($pagenumber, 1, $this->getLastPage());
  }

  function getLastPage()
  {
    if($this->perpage > 0 && $this->totalcount > 0)
    {
      for($entry=0; $entry<$this->totalcount; $entry+=$this->perpage);
      $lastpage = $entry/$this->perpage;
    }
    else
      $lastpage = 1;

    return $lastpage;
  }

  function getPaneOutput($range = 2, $backbtn = true, $nextbtn = true)
  {
    $outputpages = array();

    if($backbtn && $this->isValidPage($this->currentpage-1))
      $outputpages[] = "<a href=\"".$this->baseuri.($this->currentpage-1)."\">[<b>&laquo;</b>]</a>";

    $start = checkRange($this->currentpage-$range, 1, $this->currentpage,   true);
    $end   = checkRange($this->currentpage+$range, 1, $this->getLastPage(), true);

    for($page=$start; $page<=$end; $page++)
    if($page!=$this->currentpage)
      $outputpages[] = "<a href=\"".$this->baseuri.$page."\">[<b>".$page."</b>]</a>";
    else
      $outputpages[] = "<b>[".$page."]</b>";

    if($nextbtn && $this->isValidPage($this->currentpage+1))
      $outputpages[] = "<a href=\"".$this->baseuri.($this->currentpage+1)."\">[<b>&raquo;</b>]</a>";

    return "<span id=\"middle\">".implode(" ", $outputpages)."<br></span>";
  }
}
?>

<?
$baseuri = getenv("SCRIPT_NAME")."?page=";
$page = (isset($HTTP_GET_VARS['page'])) ? $HTTP_GET_VARS['page'] : 1;
$perpage = 7; //jeder beliebige Wert
$totalcount = 120; //oder jede andere Wert.

$pn = new pageNavigator($baseuri, $page, $perpage, $totalcount);

// hier dann irgendwelcher Code
// und an der Stelle, wo die Seiten Navigation erscheinen soll dann:

echo $pn->getPaneOutput(2); 
//der erste Paramter gibt an, wie viele Seiten 
//maximal angezeigt werden, wenn man z.B. auf Seite 
//1 ist, werden jetzt noch die Seiten 2 und 3 
//angezeigt, die 4te jeodch (noch) nicht.
?>