running php script from linino terminal?

Official Hardware Classic Yún
2 
opkg update
opkg install nano
opkg install php5-cli

php-cli -v

PHP 5.4.17 (cli) (built: Sep 12 2013 18:54:21)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies

nano hello.php

#!/usr/bin/php-cli
<?php echo "hello world!\n"; ?>

chmod 755 hello.php

./hello.php

hello world!

sample to connect with mysql

http://forum.arduino.cc/index.php?topic=206746.msg1524891#msg1524891