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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_ireplace.php,v 1.18 2005/01/26 04:55:13 aidan Exp $

  19  
  20  
  21  /**

  22   * Replace str_ireplace()

  23   *

  24   * @category    PHP

  25   * @package     PHP_Compat

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

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

  28   * @version     $Revision: 1.18 $

  29   * @since       PHP 5

  30   * @require     PHP 4.0.0 (user_error)

  31   * @note        count not by returned by reference, to enable

  32   *              change '$count = null' to '&$count'

  33   */
  34  if (!function_exists('str_ireplace')) {
  35      function str_ireplace($search, $replace, $subject, $count = null)
  36      {
  37          // Sanity check

  38          if (is_string($search) && is_array($replace)) {
  39              user_error('Array to string conversion', E_USER_NOTICE);
  40              $replace = (string) $replace;
  41          }
  42  
  43          // If search isn't an array, make it one

  44          if (!is_array($search)) {
  45              $search = array ($search);
  46          }
  47          $search = array_values($search);
  48  
  49          // If replace isn't an array, make it one, and pad it to the length of search

  50          if (!is_array($replace)) {
  51              $replace_string = $replace;
  52  
  53              $replace = array ();
  54              for ($i = 0, $c = count($search); $i < $c; $i++) {
  55                  $replace[$i] = $replace_string;
  56              }
  57          }
  58          $replace = array_values($replace);
  59  
  60          // Check the replace array is padded to the correct length

  61          $length_replace = count($replace);
  62          $length_search = count($search);
  63          if ($length_replace < $length_search) {
  64              for ($i = $length_replace; $i < $length_search; $i++) {
  65                  $replace[$i] = '';
  66              }
  67          }
  68  
  69          // If subject is not an array, make it one

  70          $was_array = false;
  71          if (!is_array($subject)) {
  72              $was_array = true;
  73              $subject = array ($subject);
  74          }
  75  
  76          // Loop through each subject

  77          $count = 0;
  78          foreach ($subject as $subject_key => $subject_value) {
  79              // Loop through each search

  80              foreach ($search as $search_key => $search_value) {
  81                  // Split the array into segments, in between each part is our search

  82                  $segments = explode(strtolower($search_value), strtolower($subject_value));
  83  
  84                  // The number of replacements done is the number of segments minus the first

  85                  $count += count($segments) - 1;
  86                  $pos = 0;
  87  
  88                  // Loop through each segment

  89                  foreach ($segments as $segment_key => $segment_value) {
  90                      // Replace the lowercase segments with the upper case versions

  91                      $segments[$segment_key] = substr($subject_value, $pos, strlen($segment_value));
  92                      // Increase the position relative to the initial string

  93                      $pos += strlen($segment_value) + strlen($search_value);
  94                  }
  95  
  96                  // Put our original string back together

  97                  $subject_value = implode($replace[$search_key], $segments);
  98              }
  99  
 100              $result[$subject_key] = $subject_value;
 101          }
 102  
 103          // Check if subject was initially a string and return it as a string

 104          if ($was_array === true) {
 105              return $result[0];
 106          }
 107  
 108          // Otherwise, just return the array

 109          return $result;
 110      }
 111  }
 112  
 113  ?>