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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: Tom Buskens <ortega@php.net>                                |

  16  // |          Aidan Lister <aidan@php.net>                                |

  17  // +----------------------------------------------------------------------+

  18  //

  19  // $Id: substr_compare.php,v 1.5 2005/01/26 04:55:13 aidan Exp $

  20  
  21  
  22  /**

  23   * Replace substr_compare()

  24   *

  25   * @category    PHP

  26   * @package     PHP_Compat

  27   * @link        http://php.net/function.substr_compare

  28   * @author      Tom Buskens <ortega@php.net>

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

  30   * @version     $Revision: 1.5 $

  31   * @since       PHP 5

  32   * @require     PHP 4.0.0 (user_error)

  33   */
  34  if (!function_exists('substr_compare')) {
  35      function substr_compare($main_str, $str, $offset, $length = null, $case_insensitive = false)
  36      {
  37          if (!is_string($main_str)) {
  38              user_error('substr_compare() expects parameter 1 to be string, ' .
  39                  gettype($main_str) . ' given', E_USER_WARNING);
  40              return;
  41          }
  42  
  43          if (!is_string($str)) {
  44              user_error('substr_compare() expects parameter 2 to be string, ' .
  45                  gettype($str) . ' given', E_USER_WARNING);
  46              return;
  47          }
  48          
  49          if (!is_int($offset)) {
  50              user_error('substr_compare() expects parameter 3 to be long, ' .
  51                  gettype($offset) . ' given', E_USER_WARNING);
  52              return;
  53          }
  54          
  55          if (is_null($length)) {
  56              $length = strlen($main_str) - $offset;
  57          } elseif ($offset >= strlen($main_str)) {
  58              user_error('substr_compare() The start position cannot exceed initial string length',
  59                  E_USER_WARNING);
  60              return false;
  61          }
  62  
  63          $main_str = substr($main_str, $offset, $length);
  64          $str = substr($str, 0, strlen($main_str));
  65  
  66          if ($case_insensitive === false) {
  67              return strcmp($main_str, $str);
  68          } else {
  69              return strcasecmp($main_str, $str);
  70          }
  71      }
  72  }
  73  
  74  ?>