Post to facebook Page using Graph API v9.0 and PHP SDK v5 tutorial aims at showing you how to dynamically post links and messages to your facebook page and groups from your PHP script.

Create Your Facebook App
Go to developers.facebook.com
Click on Create App
Copy your App ID and your Secret Key
Get Access Token
Test your Graph API token
Get your Page ID
How to get non expiring facebook Graph API access token
Download Facebook PHP SDK
PHP Code To Post To Facebook Page
Reference To Facebook PHP SDK
Facebook App settings
Post To Facebook Page
Post To Facebook Group
Click here https://firstclicklimited.com/tutorials/index.php/2021/02/02/post-to-facebook-page-using-graph-api-v9-0-and-php-sdk-v5-with-non-expiring-access-token/ to see full tutorial