This is the "Hello world !" source code basic example.
<? echo "Hello World !" ?>
Save it with in /var/www/hello.php file then run it opening your browser on board IP using this URL:
PHP and Lighttp web server are already installed by default on the Arietta bootable Debian Linux microSD.
If you need to install it on a new distribution use these commands:
~# apt-get update ~# apt-get install php5
See the phpinfo() output generated by the default PHP installation.