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File: paging.class.php

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  Classes of Tom Taylor  >  Guestbook v1  >  paging.class.php  >  Download  
File: paging.class.php
Role: Class source
Content type: text/plain
Description: sql paging class - not mine
Class: Guestbook v1
Post and display comments in a guestbook
Author: By
Last change:
Date: 9 years ago
Size: 3,855 bytes
 

Contents

Class file image Download
<?php
/**************************************************************************************
 * Class: Pager
 * Author: Tsigo <tsigo@tsiris.com>
 * Methods:
 * findStart
 * findPages
 * pageList
 * nextPrev
 * Redistribute as you see fit.
 **************************************************************************************/
 
class Pager
 
{
 
/***********************************************************************************
   * int findStart (int limit)
   * Returns the start offset based on $_GET['page'] and $limit
   ***********************************************************************************/
  
function findStart($limit)
    {
     if ((!isset(
$_GET['page'])) || ($_GET['page'] == "1"))
      {
      
$start = 0;
      
$_GET['page'] = 1;
      }
     else
      {
      
$start = ($_GET['page']-1) * $limit;
      }

     return
$start;
    }
 
/***********************************************************************************
   * int findPages (int count, int limit)
   * Returns the number of pages needed based on a count and a limit
   ***********************************************************************************/
  
function findPages($count, $limit)
    {
    
$pages = (($count % $limit) == 0) ? $count / $limit : floor($count / $limit) + 1;

     return
$pages;
    }
 
/***********************************************************************************
   * string pageList (int curpage, int pages)
   * Returns a list of pages in the format of " < [pages] > "
   ***********************************************************************************/
  
function pageList($curpage, $pages)
    {
    
$page_list = "";

    
/* Print the first and previous page links if necessary */
    
if (($curpage != 1) && ($curpage))
      {
      
$page_list .= " <a href=\"".$_SERVER['PHP_SELF']."?page=1\" title=\"First Page\"></a> ";
      }

     if ((
$curpage-1) > 0)
      {
      
$page_list .= "<a href=\"".$_SERVER['PHP_SELF']."?page=".($curpage-1)."\" title=\"Previous Page\"><</a> ";
      }

    
/* Print the numeric page list; make the current page unlinked and bold */
    
for ($i=1; $i<=$pages; $i++)
      {
       if (
$i == $curpage)
        {
        
$page_list .= "<b>".$i."</b>";
        }
       else
        {
        
$page_list .= "<a href=\"".$_SERVER['PHP_SELF']."?page=".$i."\" title=\"Page ".$i."\">".$i."</a>";
        }
      
$page_list .= " ";
      }

    
/* Print the Next and Last page links if necessary */
    
if (($curpage+1) <= $pages)
      {
      
$page_list .= "<a href=\"".$_SERVER['PHP_SELF']."?page=".($curpage+1)."\" title=\"Next Page\">></a> ";
      }

     if ((
$curpage != $pages) && ($pages != 0))
      {
      
$page_list .= "<a href=\"".$_SERVER['PHP_SELF']."?page=".$pages."\" title=\"Last Page\"></a> ";
      }
    
$page_list .= "\n";

     return
$page_list;
    }
 
/***********************************************************************************
   * string nextPrev (int curpage, int pages)
   * Returns "Previous | Next" string for individual pagination (it's a word!)
   ***********************************************************************************/
  
function nextPrev($curpage, $pages)
    {
    
$next_prev = "";

     if ((
$curpage-1) <= 0)
      {
      
$next_prev .= "Previous";
      }
     else
      {
      
$next_prev .= "<a href=\"".$_SERVER['PHP_SELF']."?page=".($curpage-1)."\">Previous</a>";
      }

    
$next_prev .= " | ";

     if ((
$curpage+1) > $pages)
      {
      
$next_prev .= "Next";
      }
     else
      {
      
$next_prev .= "<a href=\"".$_SERVER['PHP_SELF']."?page=".($curpage+1)."\">Next</a>";
      }

     return
$next_prev;
    }
  }
?>