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Tip: Each header field has a purpose. For example, Text Domain enables translation, and License is required for distribution in the Plugin Directory. Learn more in the Plugin Developer Handbook.
Understanding hooks: actions and filters
WordPress plugins interact with core events using hooks. There are two types:
- Actions: Triggered when WordPress does something (e.g., loading scripts, saving posts).
- Filters: Allow you to modify data before it’s displayed or saved.
Let’s add a reading-time badge using the the_content filter:
