File indexing completed on 2024-04-28 17:09:58

 <?php
 
 /**
  * Flooer Framework
  *
  * LICENSE: BSD License (2 Clause)
  *
  * @category    Flooer
  * @package     Flooer_Utility
  * @author      Akira Ohgaki <akiraohgaki@gmail.com>
  * @copyright   Akira Ohgaki
  * @license     https://opensource.org/licenses/BSD-2-Clause  BSD License (2 Clause)
  * @link        https://github.com/akiraohgaki/flooer
  */
 
 /**
  * Usage
  *
  * $paginationArray = Flooer_Utility_Pagination::paginate(2000, 10, 3);
  */
 
 /**
  * Paginator class
  *
  * @category    Flooer
  * @package     Flooer_Utility
  * @author      Akira Ohgaki <akiraohgaki@gmail.com>
  */
 class Flooer_Utility_Pagination
 {
 
     /**
      * Paginating
      *
      * @param   int $totalItems
      * @param   int $itemsPerPage
      * @param   int $current
      * @param   int $range
      * @param   string $style Available values: all, jumping, elastic, sliding
      * @return  array
      */
     public static function paginate($totalItems, $itemsPerPage, $current = 1, $range = 10, $style = 'sliding')
     {
         $pagination = array();
         $pagination['totalItems'] = (int) $totalItems;
         $pagination['itemsPerPage'] = (int) $itemsPerPage;
         $pagination['first'] = 1;
         $pagination['last'] = (int) ceil($pagination['totalItems'] / $pagination['itemsPerPage']);
         $pagination['current'] = (int) $current;
         if ($pagination['current'] >= $pagination['first']
             && $pagination['current'] <= $pagination['last']
         ) {
             if ($pagination['current'] > $pagination['first']) {
                 $pagination['previous'] = $pagination['current'] - 1;
             }
             if ($pagination['current'] < $pagination['last']) {
                 $pagination['next'] = $pagination['current'] + 1;
             }
             switch (strtolower($style)) {
                 case 'all':
                     // List of all pages
                     // 1 2 3 4 5 6 7 8 9 10 ...
                     $low = $pagination['first'];
                     $high = $pagination['last'];
                     break;
                 case 'jumping':
                     // The end of a range is the beginning of the new range
                     // Before: 1 2 3 4 5 6 7 8 [9] 10
                     // After:  [10] 11 12 13 14 15 16 17 18 19 20
                     $low = (int) floor($pagination['current'] / $range) * $range;
                     $high = $low + $range;
                     if ($low < $pagination['first']) {
                         $low = $pagination['first'];
                         $high = ($pagination['first'] + $range) - 1;
                         if ($high > $pagination['last']) {
                             $high = $pagination['last'];
                         }
                     }
                     if ($high > $pagination['last']) {
                         $high = $pagination['last'];
                         $low = ($pagination['last'] - $range) + 1;
                         if ($low < $pagination['first']) {
                             $low = $pagination['first'];
                         }
                     }
                     break;
                 case 'elastic':
                     // Elastic scrolling style
                     // Before: 1 2 3 4 5 6 7 8 [9] 10
                     // After:  1 2 3 4 5 6 7 8 9 [10] 11 12 13 14 15 16 17 18 19 20
                     $low = ($pagination['current'] - $range) + 1;
                     $high = $pagination['current'] + $range;
                     if ($low < $pagination['first']) {
                         $low = $pagination['first'];
                         $high = ($pagination['current'] + $range) - 1;
                         if ($high > $pagination['last']) {
                             $high = $pagination['last'];
                         }
                     }
                     if ($high > $pagination['last']) {
                         $high = $pagination['last'];
                         $low = ($pagination['current'] - $range) + 1;
                         if ($low < $pagination['first']) {
                             $low = $pagination['first'];
                         }
                     }
                     break;
                 case 'sliding':
                     // Continue to default
                 default:
                     // Sliding scrolling style
                     // Before: 1 2 3 4 [5] 6 7 8 9 10
                     // After:  2 3 4 5 [6] 7 8 9 10 11
                     $delta = (int) ceil($range / 2);
                     $low = ($pagination['current'] - $delta) + 1;
                     $high = $pagination['current'] + $delta;
                     if ($low < $pagination['first']) {
                         $low = $pagination['first'];
                         $high = ($pagination['first'] + $range) - 1;
                         if ($high > $pagination['last']) {
                             $high = $pagination['last'];
                         }
                     }
                     if ($high > $pagination['last']) {
                         $high = $pagination['last'];
                         $low = ($pagination['last'] - $range) + 1;
                         if ($low < $pagination['first']) {
                             $low = $pagination['first'];
                         }
                     }
                     break;
             }
             $pagination['pages'] = range($low, $high);
         }
         return $pagination;
     }
 
 }