This script runs via a cronjob to periodically check for new Google+ Posts and then posts those to Facebook. Ideally the Google+ API should have a webhook to let us know when there's a new post, but since that doesn't exist this polling method will have to do.
- PHP 5.3+ (for namespaces)
- Any server that can run a cronjob (Tested on CentOS 6)
- Get the code
git clone https://github.com/mbarany/googleplus-to-facebook.gitcd googleplus-to-facebookgit submodule update --init
- Go to https://developers.facebook.com/ and Create a new Facebook App
- Click
Add Platformand select website. you'll need a Site URL for authorization - You need your Facebook Account to authorize the App to post for you. Simply plugin the values to the following link.
https://www.facebook.com/dialog/oauth?client_id=[APP ID]&redirect_uri=[Website]&scope=publish_actions
- Click
- Go to https://cloud.google.com/console and Create a new Project
- Create a new OAuth client and select
Service Account. This will generate a private key for you to download. - Put your private key in the
/privatedirectory
- Create a new OAuth client and select
- Copy
/private/config.sample.phpto/private/config.phpand fill in appropriate values. - Setup the cronjob. I like to run it every minute to be speedy, but obviously you can adjust this to your liking.
* * * * * mbarany /usr/bin/php -f /home/mbarany/googleplus-to-facebook/run.php >> /home/mbarany/optional_log.log
- The first time you run the script, it will cache the current date so that it only posts items that are newer than that date.
- It uses a small file cache in the
/cachedirectory, so make sure it's writable otherwise the script will complain. - Note that each time you run the script you use one of your Google API requests in your quota. I think the default quota is 10,000 requests per day, but if you use your Google Project for other things you should keep this in mind.