Offline status update

Hi,

I have an application, there user can schedule their status messages. Before they schedule they want to authorize themselves to the yahoo.

What my requirement is

1. When user authorizing to yahoo, i need to store the users data and access_token to my database
2. I have a linux cron job, based on user schdule, it will update the users status message

I need to develop this app in php.

is the two abpve tasks possible? and storing the access_token is suggestable?

Please somebody advise me on this

Thanks