PHP 5.4 server on Cloud9 (C9)

# list of available packages on C9
$ c9pm list

# install PHP 5.4 (5.4.14 in this case)
$ c9pm install php-5.4.14

# make sure we got it
$ php --version

PHP 5.4.14 (cli) (built: May  1 2013 13:35:32)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies

# let's test
$ mkdir test && cd test

$ echo '<?php echo "test";' > test.php

# run the server
$ php -S $IP:$PORT

Listening on http://111.111.111.111:8080
Document root is /var/lib/something/cfb5b00024d/app-root/data/857528/test
Press Ctrl-C to quit.

# now you should be able to access that server here
https://[your-webapp-name]-c9-[your-user-name].c9.io/test.php