From:             
Operating system: Debian Linux
PHP version:      5.4.1RC1
Package:          Unknown/Other Function
Bug Type:         Bug
Bug description:bin2hex(hex2bin($data)) != $data

Description:
------------
If you try to apply bin2hex on the result of hex2bin, when the length of
the 
initial data is an odd number, the resulting data are not the same as the 
original.

$ php -v
PHP 5.4.1RC1 (cli) (built: Apr  6 2012 13:31:16) 
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies

This is the original Debian package present in sid on the 7th April 2012




Test script:
---------------
<?php

$data = '12345';
var_dump($data, bin2hex(hex2bin($data)));
// outputs :
// string(5) "12345"
// string(4) "1234"

Expected result:
----------------
The output should be the same. (ie 12345 both times)

Actual result:
--------------
string(5) "12345"
string(4) "1234"


-- 
Edit bug report at https://bugs.php.net/bug.php?id=61660&edit=1
-- 
Try a snapshot (PHP 5.4):            
https://bugs.php.net/fix.php?id=61660&r=trysnapshot54
Try a snapshot (PHP 5.3):            
https://bugs.php.net/fix.php?id=61660&r=trysnapshot53
Try a snapshot (trunk):              
https://bugs.php.net/fix.php?id=61660&r=trysnapshottrunk
Fixed in SVN:                        
https://bugs.php.net/fix.php?id=61660&r=fixed
Fixed in SVN and need be documented: 
https://bugs.php.net/fix.php?id=61660&r=needdocs
Fixed in release:                    
https://bugs.php.net/fix.php?id=61660&r=alreadyfixed
Need backtrace:                      
https://bugs.php.net/fix.php?id=61660&r=needtrace
Need Reproduce Script:               
https://bugs.php.net/fix.php?id=61660&r=needscript
Try newer version:                   
https://bugs.php.net/fix.php?id=61660&r=oldversion
Not developer issue:                 
https://bugs.php.net/fix.php?id=61660&r=support
Expected behavior:                   
https://bugs.php.net/fix.php?id=61660&r=notwrong
Not enough info:                     
https://bugs.php.net/fix.php?id=61660&r=notenoughinfo
Submitted twice:                     
https://bugs.php.net/fix.php?id=61660&r=submittedtwice
register_globals:                    
https://bugs.php.net/fix.php?id=61660&r=globals
PHP 4 support discontinued:          
https://bugs.php.net/fix.php?id=61660&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=61660&r=dst
IIS Stability:                       
https://bugs.php.net/fix.php?id=61660&r=isapi
Install GNU Sed:                     
https://bugs.php.net/fix.php?id=61660&r=gnused
Floating point limitations:          
https://bugs.php.net/fix.php?id=61660&r=float
No Zend Extensions:                  
https://bugs.php.net/fix.php?id=61660&r=nozend
MySQL Configuration Error:           
https://bugs.php.net/fix.php?id=61660&r=mysqlcfg

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