Can confirm that Ubuntu/Debian's behavior is different from CentOS 6:
$ php --version
PHP 5.3.3 (cli) (built: Jul 3 2012 16:53:21)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
$ php -r "echo 'CRYPT_EXT_DES: ', CRYPT_EXT_DES, PHP_EOL, crypt(md5('my
passw0rd'), '_.012saltIO.319ikKPU'), PHP_EOL;"
CRYPT_EXT_DES: 1
_.012saltIO.319ikKPU
**
precise
# php --version
PHP 5.3.10-1ubuntu3.2 with Suhosin-Patch (cli) (built: Jun 13 2012 17:20:55)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies
# php -r "echo 'CRYPT_EXT_DES: ', CRYPT_EXT_DES, PHP_EOL, crypt(md5('my
passw0rd'), '_.012saltIO.319ikKPU'), PHP_EOL;"
CRYPT_EXT_DES: 1
_.msUWmoj85W6
**
However, this is not a regression for Ubuntu.
I tested this all the way back to hardy, which seemed to not have CRYPT_EXT_DES:
**
# php --version
PHP 5.2.4-2ubuntu5.25 with Suhosin-Patch 0.9.6.2 (cli) (built: Jun 13 2012
18:36:37)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies
php -r "echo 'CRYPT_EXT_DES: ', CRYPT_EXT_DES, PHP_EOL, crypt(md5('my
passw0rd'), '_.012saltIO.319ikKPU'), PHP_EOL;"
CRYPT_EXT_DES: 0
_.msUWmoj85W6
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https://bugs.launchpad.net/bugs/1046330
Title:
Incorrect crypt() function behavior
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