includes/paginate.php

   1 <?php
   2 /**
   3  * @category News
   4  * @package News_Paginate
   5  * @copyright Copyright (c) 2008, Bellière Ludovic
   6  * @license http://opensource.org/licenses/mit-license.php MIT license
   7  */
   8
   9 /**
  10  * @author Bellière Ludovic
  11  * @category News
  12  * @package News_Paginate
  13  * @copyright Copyright (c) 2008, Bellière Ludovic
  14  * @license http://opensource.org/licenses/mit-license.php MIT license
  15  */
  16 class paginate {
  17
  18     /**
  19      * Nombre d'éléments par page.
  20      *
  21      * @var integer
  22      */
  23     public $limit_by_page=10;
  24
  25     /**
  26      * Nombre d'éléments total
  27      *
  28      * @var integer
  29      */
  30     public $elements=0;
  31
  32     /**
  33      * Nombre total de page qui seront générées
  34      *
  35      * @var integer
  36      */
  37     public $number_of_pages;
  38
  39     /**
  40      * Variable a regarder pour connaître la page courrante.
  41      *
  42      * @var string
  43      */
  44     protected $page_variable="p";
  45
  46     /**
  47      * Numéro de la page courrante
  48      *
  49      * @var integer
  50      */
  51     protected $current_page=1;
  52
  53     public function __construct($elements,$limit_by_page=10) {
  54         $this->limit_by_page = (int) $limit_by_page;
  55         $this->elements = (int) $elements;
  56         self::set_current_page();
  57     }
  58
  59     public function paginate($pageurl) {
  60         $this->number_of_pages = ceil($this->elements / $this->limit_by_page);
  61         if ($this->number_of_pages == 1) {
  62             return "Page : 1.";
  63         } else {
  64                      $pageurl = strpos($pageurl, '?') ? $pageurl.'&amp;' : $pageurl.'?';
  65             $i=1;
  66             $txt = ($this->current_page === 1) ? '' : '&lt; <a href="'.$pageurl.$this->page_variable.'='.($this->current_page-1).'">précédent</a> | ';
  67             while($i < $this->number_of_pages) {
  68                 if ($i == $this->current_page) {
  69                     $txt.= "page $i, ";
  70                 } else {
  71                     $txt.= '<a href="'.$pageurl.$this->page_variable.'='.$i.'" class="paginator">page '.$i.'</a>, ';
  72                 }
  73                 $i++;
  74             }
  75             return substr($txt,0,-2).(($this->number_of_pages > $this->current_page) ? ' | <a href="'.$pageurl.$this->page_variable.'='.($this->current_page+1).'">Suivant</a> &gt; ':'').'.';
  76         }
  77     }
  78
  79     /**
  80      * Return the SQL LIMIT statement for a sql queries
  81      */
  82     public function get_sql_limit_statement() {
  83         $lines = $this->limit_by_page;
  84         $offset = $this->limit_by_page*($this->current_page-1);
  85         return "LIMIT $offset, $lines";
  86     }
  87
  88     protected function set_current_page() {
  89         if (empty($_GET['p'])) {
  90             $this->current_page = 1;
  91         } else {
  92             $this->current_page = intval($_GET['p']);
  93         }
  94     }
  95
  96     public function get_current_page() {
  97         return $this->current_page;
  98     }
  99 }