s15433251:/usr/local/bin# which php
/usr/bin/php
s15433251:/usr/local/bin# /usr/bin/php -v
PHP Warning:  PHP Startup: mongo: Unable to initialize module
Module compiled with module API=20060613
PHP    compiled with module API=20090626
These options need to match
 in Unknown on line 0
PHP 5.3.5-0.dotdeb.0 with Suhosin-Patch (cli) (built: Jan  7 2011 00:30:52)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
    with Suhosin v0.9.32.1, Copyright (c) 2007-2010, by SektionEins GmbH
s15433251:/usr/local/bin#