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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: str_word_count.php,v 1.9 2005/02/28 11:45:28 aidan Exp $

  19  
  20  
  21  /**

  22   * Replace str_word_count()

  23   *

  24   * @category    PHP

  25   * @package     PHP_Compat

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

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

  28   * @version     $Revision: 1.9 $

  29   * @since       PHP 4.3.0

  30   * @require     PHP 4.0.0 (user_error)

  31   */
  32  if (!function_exists('str_word_count')) {
  33      function str_word_count($string, $format = null)
  34      {
  35          if ($format !== 1 && $format !== 2 && $format !== null) {
  36              user_error('str_word_count() The specified format parameter, "' . $format . '" is invalid',
  37                  E_USER_WARNING);
  38              return false;
  39          }
  40  
  41          $word_string = preg_replace('/[0-9]+/', '', $string);
  42          $word_array  = preg_split('/[^A-Za-z0-9_\']+/', $word_string, -1, PREG_SPLIT_NO_EMPTY);
  43  
  44          switch ($format) {
  45              case null:
  46                  $result = count($word_array);
  47                  break;
  48  
  49              case 1:
  50                  $result = $word_array;
  51                  break;
  52  
  53              case 2:
  54                  $lastmatch = 0;
  55                  $word_assoc = array();
  56                  foreach ($word_array as $word) {
  57                      $word_assoc[$lastmatch = strpos($string, $word, $lastmatch)] = $word;
  58                      $lastmatch += strlen($word);
  59                  }
  60                  $result = $word_assoc;
  61                  break;
  62          }
  63  
  64          return $result;
  65      }
  66  }
  67  
  68  ?>