I am following this blog article. I need to implement a similar function using either PHP or JavaScript.
It appears that Google spreadsheet has changed to "Google Sheets", and the old way of appending is not supported anymore.
I have implemented a PHP solution to fetch the data from the the Google Sheet and extract the data as CSV data (from New Google Spreadsheets publish limitation).
I need to add to this the ability to write a record to the spreadsheet. Can anyone provide a pointer to how this can be done using PHP or JavaScript?