<script>
function change_page(val,page,qry_st)
{
window.location = page+'?pagenum='+val+qry_st;
}
</script>
<?php
// for pagination of
// two types ,nomal link and dropdown menu
// for normal links pass 'links' as the third parameter while creating the object and for dropdown pagination pass 'dropdown'.
class pagination
{
var $max_results_per_page=0; // no. of results to be shown per page
var $total_results=0; //no. of all results to be shown over all pages
var $max_pages =0; // max. pages i.e the maximum number of pages for a particular query , calculated in the constructor
var $current_page=0 ; // the page no. that is currently rendered
var $pagination_string=''; // the output string , which contains , the actual pagination links/dropdown
var $page_x_of_y = ''; // the output string , which contains the string like 'page 1 of 2'
var $qry_string = ''; // the query string with the address ,useful when the pagination is done on pages which has search feature as the GET parameters are not lost
function __construct($total_res,$res_per_page,$pagination_type)
{
$this->max_results_per_page = $res_per_page;
$this->total_results = $total_res;
$this->max_pages = ceil($total_res/$res_per_page);
$query_string = '';
if(is_array($_GET))
{
foreach($_GET as $key=>$value)
{
if($key!='pagenum')
$query_string .= '&'.$key.'='.$value;
}
}
$this->qry_string = $query_string;
if(isset($_REQUEST['pagenum']))
{
if($_REQUEST['pagenum']>$this->max_pages)
{
$this->current_page = $this->max_pages;
}
else if($_REQUEST['pagenum']<1)
{
$this->current_page = 1;
}
else
{
$this->current_page = $_REQUEST['pagenum'];
}
}
else
{
$this->current_page = 1;
}
$this->page_x_of_y = 'page '.$this->current_page.' of '.$this->max_pages;
switch($pagination_type)
{
case 'links':
$this->page_links();
break;
case 'dropdown':
$this->page_dropdown();
break;
default : die('Sorry no such pagination style as "'.$pagination_type.'" exist');
}
}
public function page_links()
{
if ($this->current_page > 1)
{
$page = $this->current_page-1;
// for image arrows
// use this
// $prev = "<a href='".$_SERVER['PHP_SELF']."?pagenum=$page".$qry_string."'><img src='../images/reverse.gif' width='10px' height='10px'></a> ";
//if you dont have images use this
$prev = "<a href='".$_SERVER['PHP_SELF']."?pagenum=$page".$this->qry_string."'><<</a> ";
}
else
{
$prev = ' '; // we're on page one, don't print previous link
$first = ' '; // nor the first page link
}
if ($this->current_page < $this->max_pages )
{
$page = $this->current_page + 1;
// for image arrows
// use this
// $next = "<a href='".$_SERVER['PHP_SELF']."?pagenum=".$page."'><img src='../images/forward.gif' width='10px' height='10px'></a> ";
//if you dont have images use this
$next = "<a href='".$_SERVER['PHP_SELF']."?pagenum=".$page.$this->qry_string."'>>></a> ";
}
else
{
$next = ' '; // we're on the last page, don't print next link
$last = ' '; // nor the last page link
}
for($page = 1; $page <= $this->max_pages; $page++)
{
if ($page == $this->current_page)
{
$nav .= " $page "; // no need to create a link to current page
}
else
{
if($page>=$this->current_page-5 && $page<=$this->current_page+5)
$nav .= "<a href='".$_SERVER['PHP_SELF']."?pagenum=$page"."$this->qry_string'>".$page."</a> ";
}
}
$this->pagination_string = $prev.$nav.$next;
}
public function page_dropdown()
{ $nav = "<select name='pagenum' onChange=change_page(this.value,'".$_SERVER['PHP_SELF']."','".$this->qry_string."')>";
for($page = 1; $page <= $this->max_pages; $page++)
{
if ($page == $this->current_page)
{
$nav .= "<option value='".$page."' selected>".$page."</option> ";
}
else
{
$nav .= "<option value='".$page."' >".$page."</option> ";
}
}
$nav .= "</select>";
$this->pagination_string = $nav;
}
public function get_pagination_query($qry)
{
$offset = ($this->current_page - 1) * $this->max_results_per_page;
$max=" LIMIT $offset, $this->max_results_per_page";
$new_query = $qry."".$max;
return $new_query;
}
}?>
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