phpsh -- A php interactive shell much better than php -a

you can learn all about phpsh at http://phpsh.org

To install it,  simply git clone git://github.com/facebook/phpsh.git or you can directly download it from http://github.com/facebook/phpsh And then enter your phpsh folder and run 'sudo python setup.py install'

This shell is much better than the php's built-in shell （php -a) with a lot of handy features like auto-complete, built-in docs, etc.