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Plugin Deactivation Hook

WordPress hook that fires when a plugin is deactivated, used for cleanup tasks.

How it works

WordPress hook that fires when a plugin is deactivated, used for cleanup tasks.

In WordPress

register_deactivation_hook() should clean up temporary data but NOT delete user data. Full cleanup belongs in uninstall.php.

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What Is Plugin Deactivation Hook? — WordPress Security Glossary | WP HealthKit