When registering filters, you must pass in three parameters:
- The filter name
- The callback for the filter - for displaying/returning content. The parameters passed to the callback change between different filters.
- An array of options for the code using the filters (these also change for each filter)
Here's an example:
When the admin script runs the filter/action, every registered filter's callback will be executed.
Read further to view what each filter does, view each filter's individual info page.