Filters (hooks) (tag)
| add_filter() | Attaches the specified PHP function to the specified filter hook. Thus, when the filter is triggered, the value will be filtered by the specified PHP function. |
| apply_filters() | Applies the attached PHP function to the specified filter. |
| current_filter() | Gets the name of the current filter (which is being executed at the moment this function is called). |
| doing_filter() | Checks whether the specified hook (filter, action) is currently being processed. |
| has_filter() | Checks if any function is attached to the specified filter. You can specify the name of a specific function. |
| remove_all_filters() | Removes all hooks from the specified filter. |
| remove_filter() | Removes a function from a specified filter hook. |