Edit report at https://bugs.php.net/bug.php?id=62875&edit=1
ID: 62875 User updated by: robertleglu at msn dot com Reported by: robertleglu at msn dot com Summary: base64_encode broken with binary string Status: Open Type: Bug Package: URL related Operating System: z/OS PHP Version: Irrelevant Block user comment: N Private report: N New Comment: I continue searching and i am pretty sure that the internal routines is written with an ascii table somewhere. I was testing my routine called portable_base64_encode on z/OS and was confused because it seems to be wrong. Here is the result : str : A base64_encode : QQ== portable_base64_encode : wQ== str : ABC base64_encode : QUJD portable_base64_encode : wcLD But, although the built-in function may seem right and mine seems wrong, the fact is that the binary code of 'A' 'B' and 'C' are not 65, 66 and 67, but 193, 194 and 195 in EBCDIC. So, even for a human-readable string, the built-in routine is wrong because base64 is intended to encode a binary flow... Previous Comments: ------------------------------------------------------------------------ [2012-08-20 15:25:56] ras...@php.net reeze, it isn't really OS-specific but rather EBCDIC-specific. We have EBCDIC hacks in a few places, but I guess nobody bothered to make base64_encode EBCDIC- safe. ------------------------------------------------------------------------ [2012-08-20 15:23:24] reeze dot xia at gmail dot com I can't reproduce it. http://3v4l.org/GIL8C It seems a OS specific bug. and I can't get a z/OS :( ------------------------------------------------------------------------ [2012-08-20 14:29:22] robertleglu at msn dot com Description: ------------ problem occurs on z/OS 1.11 (OS of IBM mainframe) with latest version of php for that system. binary strings are badly encoded with base64_encode. rewriting my own (portable) version bypass the problem. php version : (php_cli --version) PHP 5.1.2 (cli) (built: Sep 28 2010 16:33:24) Copyright (c) 1997-2006 The PHP Group Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies Note that z/OS works in EBCDIC, so any code that assume ascii code, ascii order and ascii continuity is broken Test script: --------------- <?php $str = chr(0x47).chr(0x49).chr(46); echo base64_encode($str).PHP_EOL; ?> Expected result: ---------------- R0ku Actual result: -------------- 5fEG ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62875&edit=1
