To match your user ID to the Mixpanel user or device ID for reporting, you need to properly implement user identification in Mixpanel. Here's how you can do it:
1. For anonymous users, Mixpanel automatically generates a $device_id. This serves as the anonymous ID for the user.
2. When a user logs in or signs up, you should call the .identify() method with your chosen user ID. This links the anonymous $device_id to your user ID.
3. For server-side tracking, you need to manage the IDs yourself. Set the $device_id for anonymous events and both $device_id and $user_id for identified users.
Here's an example of how to implement this in PHP:
```
LBKSThis approach ensures that your user ID is properly linked to Mixpanel's internal IDs for accurate reporting.
As a best practice, you should also set your chosen user ID as a separate user profile property and event property. This allows you to always query and see your own chosen user ID in reports.
For more detailed information, you can refer to these resources:
- [Identifying Users (Simplified)](https://docs.mixpanel.com/docs/tracking-methods/id-management/identifying-users-simplified#server-side-identity-management)
- [Mixpanel SDKs: PHP](https://docs.mixpanel.com/docs/tracking-methods/sdks/php#managing-user-identity)
