Hi,
As a Zend Certified Engineer in PHP5 with over 7 years experience, I have developed and maintained a wide range of websites and applications using PHP, MySQL, AJAX, HTML, CSS, JQuery and JQuery Mobile.
If you need the script in PHP, the only best option is to use the Zend GData to connect to the Google Documents API.
I can provide the required API integration.
Do you want a web interface to input data directly on a web page (protected by login) and save them to the Google spreadsheet directly so that the CSV file step can be omitted?
Please clarify.
-Balakumar