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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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434 | function wp_unregister_sidebar_widget($id) { |
435 |
|
436 | /** |
437 | * Fires just before a widget is removed from a sidebar. |
438 | * |
439 | * @since 3.0.0 |
440 | * |
441 | * @param int $id The widget ID. |
442 | */ |
443 | do_action( 'wp_unregister_sidebar_widget', $id ); |
444 |
|
445 | wp_register_sidebar_widget($id, '', ''); |
446 | wp_unregister_widget_control($id); |
447 | } |
448 |
|
449 | /** |
450 | * Registers widget control callback for customizing options. |
451 | * |
452 | * @since 2.2.0 |