$ python -V
Python 2.7.2+
$ time python py.py
Memory used: 900.89MB
real 0m13.582s
user 0m12.929s
sys 0m0.588s
$ php -v
PHP 5.3.6-13ubuntu3.6 with Suhosin-Patch (cli) (built: Feb 11 2012 02:17:16)
$ time php php.php
Memory used: -1742.00 MB
real 0m13.998s
user 0m12.365s
sys 0m1.512s