library/Zend/Ldap/Converter.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category   Zend
  16  * @package    Zend_Ldap
  17  * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
  18  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  19  * @version    $Id: Converter.php 16613 2009-07-10 06:55:41Z ralph $
  20  */
  21
  22 /**
  23  * Zend_Ldap_Converter is a collection of useful LDAP related conversion functions.
  24  *
  25  * @category   Zend
  26  * @package    Zend_Ldap
  27  * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
  28  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  29  */
  30 class Zend_Ldap_Converter
  31 {
  32     /**
  33      * Converts all ASCII chars < 32 to "\HEX"
  34      *
  35      * @see Net_LDAP2_Util::asc2hex32() from Benedikt Hallinger <beni@php.net>
  36      * @link http://pear.php.net/package/Net_LDAP2
  37      * @author Benedikt Hallinger <beni@php.net>
  38      *
  39      * @param  string $string String to convert
  40      * @return string
  41      */
  42     public static function ascToHex32($string)
  43     {
  44         for ($i = 0; $i<strlen($string); $i++) {
  45             $char = substr($string, $i, 1);
  46             if (ord($char)<32) {
  47                 $hex = dechex(ord($char));
  48                 if (strlen($hex) == 1) $hex = '0' . $hex;
  49                 $string = str_replace($char, '\\' . $hex, $string);
  50             }
  51         }
  52         return $string;
  53     }
  54
  55     /**
  56      * Converts all Hex expressions ("\HEX") to their original ASCII characters
  57      *
  58      * @see Net_LDAP2_Util::hex2asc() from Benedikt Hallinger <beni@php.net>,
  59      * heavily based on work from DavidSmith@byu.net
  60      * @link http://pear.php.net/package/Net_LDAP2
  61      * @author Benedikt Hallinger <beni@php.net>, heavily based on work from DavidSmith@byu.net
  62      *
  63      * @param  string $string String to convert
  64      * @return string
  65      */
  66     public static function hex32ToAsc($string)
  67     {
  68         $string = preg_replace("/\\\([0-9A-Fa-f]{2})/e", "''.chr(hexdec('\\1')).''", $string);
  69         return $string;
  70     }
  71 }