Fires before widgets are rendered in a dynamic sidebar. Note: The action also fires for empty sidebars, and on both the front end and back end, including the Inactive Widgets sidebar on the Widgets screen.
- ( 3.9.0 ) . .
- ( int|string ) Index, name, or ID of the dynamic sidebar. . . .
- ( bool ) $has_widgets Whether the sidebar is populated with widgets. Default true. . . .
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