I want to integrate QuickBooks Online app with my PHP application. I have downloaded the latest PHP SDK. But there I need realm id to start with. Please help me here.
And if any other requirements I need, please guide me for the same.
Please take a look at the documentation as you need to go through a 3 legged Oauth process and in your callback URL you will receive the realmId.
https://developer.intuit.com/docs/0025_quickbooksapi/0010_getting_started
regards,
Jarred