如何在CakePHP中使用Cron？

How can I use a cron job file in CakePHP for sending GCM messages in particular interval?

Can you suggest any tutorials for this?

I would like to send GCM messages to an Android phone in fixed intervals.

Sounds like a job for a custom data source or maybe transport adapter for the CakeEmail class, I haven't looked much at the GCM spec (your job). Use a cake shell to send the messags in an interval.

You can find the all the info about custom datasources, mail transports and shells (including cron jobs) here:

• CakePHP Book http://book.cakephp.org/
• Shells http://book.cakephp.org/2.0/en/console-and-shells.html
• Creating a shell http://book.cakephp.org/2.0/en/console-and-shells.html#creating-a-shell
• Shells and Cronjobs http://book.cakephp.org/2.0/en/console-and-shells/cron-jobs.html

The last link contains the info how to set up a cron job with cakephp shells.