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   1  <?php
   2  // +----------------------------------------------------------------------+

   3  // | PHP Version 4                                                        |

   4  // +----------------------------------------------------------------------+

   5  // | Copyright (c) 1997-2004 The PHP Group                                |

   6  // +----------------------------------------------------------------------+

   7  // | This source file is subject to version 3.0 of the PHP license,       |

   8  // | that is bundled with this package in the file LICENSE, and is        |

   9  // | available at through the world-wide-web at                           |

  10  // | http://www.php.net/license/3_0.txt.                                  |

  11  // | If you did not receive a copy of the PHP license and are unable to   |

  12  // | obtain it through the world-wide-web, please send a note to          |

  13  // | license@php.net so we can mail you a copy immediately.               |

  14  // +----------------------------------------------------------------------+

  15  // | Authors: Aidan Lister <aidan@php.net>                                |

  16  // +----------------------------------------------------------------------+

  17  //

  18  // $Id: array_chunk.php,v 1.14 2005/01/26 04:55:13 aidan Exp $

  19  
  20  
  21  /**

  22   * Replace array_combine()

  23   *

  24   * @category    PHP

  25   * @package     PHP_Compat

  26   * @link        http://php.net/function.array_chunk

  27   * @author      Aidan Lister <aidan@php.net>

  28   * @author      Thiemo Mättig (http://maettig.com)

  29   * @version     $Revision: 1.14 $

  30   * @since       PHP 4.2.0

  31   * @require     PHP 4.0.0 (user_error)

  32   */
  33  if (!function_exists('array_chunk')) {
  34      function array_chunk($input, $size, $preserve_keys = false)
  35      {
  36          if (!is_array($input)) {
  37              user_error('array_chunk() expects parameter 1 to be array, ' .
  38                  gettype($input) . ' given', E_USER_WARNING);
  39              return;
  40          }
  41  
  42          if (!is_numeric($size)) {
  43              user_error('array_chunk() expects parameter 2 to be long, ' .
  44                  gettype($size) . ' given', E_USER_WARNING);
  45              return;
  46          }
  47  
  48          $size = (int)$size;
  49          if ($size <= 0) {
  50              user_error('array_chunk() Size parameter expected to be greater than 0',
  51                  E_USER_WARNING);
  52              return;
  53          }
  54  
  55          $chunks = array();
  56          $i = 0;
  57  
  58          if ($preserve_keys !== false) {
  59              foreach ($input as $key => $value) {
  60                  $chunks[(int)($i++ / $size)][$key] = $value;
  61              }
  62          } else {
  63              foreach ($input as $value) {
  64                  $chunks[(int)($i++ / $size)][] = $value;
  65              }
  66          }
  67  
  68          return $chunks;
  69      }
  70  }
  71  
  72  ?>