Fires as a specific plugin is being deactivated. This hook is the “deactivation” hook used internally by register_deactivation_hook(). The dynamic portion of the hook name, `$plugin`, refers to the plugin basename.
If a plugin is silently deactivated (such as during an update), this hook does not fire.
- ( 2.0.0 ) . .
- ( bool ) Whether the plugin is deactivated for all sites in the network or just the current site. Multisite only. Default false. . . .