Comment 1 for bug 1046330

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