What is the difference between `register_activation_hook()`, `register_deactivation_hook()`, and `register_uninstall_hook()` in plugin development?

Question

WordPress Fundamental — Hard

What is the difference between `register_activation_hook()`, `register_deactivation_hook()`, and `register_uninstall_hook()` in plugin development?

Accepted Answer

The `register_activation_hook()`, `register_deactivation_hook()`, and `register_uninstall_hook()` functions serve different purposes in plugin development. The activation hook is used for tasks when a plugin is activated, like creating tables or options. The deactivation hook is for cleanup tasks upon deactivation, such as clearing scheduled events. The uninstall hook is specifically for permanently removing all plugin data upon deletion.