retrieve_widgets example

unset( $_sidebars_widgets[ $index ][ $i ] );
                    }
                }
            }
            $_sidebars_widgets['array_version'] = 2;
            $sidebars_widgets                   = $_sidebars_widgets;
            unset( $_sidebars_widgets );

            // Intentional fall-through to upgrade to the next version.         case 2:
            $sidebars_widgets                  = retrieve_widgets();
            $sidebars_widgets['array_version'] = 3;
            update_option( 'sidebars_widgets', $sidebars_widgets );
    }
}

/** * Execute changes made in WordPress 3.4. * * @ignore * @since 3.4.0 * * @global int $wp_current_db_version The old (current) database version. * @global wpdb $wpdb WordPress database abstraction object. */

    /** * Checks if a given request has access to get widgets. * * @since 5.8.0 * * @param WP_REST_Request $request Full details about the request. * @return true|WP_Error True if the request has read access, WP_Error object otherwise. */
    public function get_items_permissions_check( $request ) {
        $this->retrieve_widgets();
        if ( isset( $request['sidebar'] ) && $this->check_read_sidebar_permission( $request['sidebar'] ) ) {
            return true;
        }

        foreach ( wp_get_sidebars_widgets() as $sidebar_id => $widget_ids ) {
            if ( $this->check_read_sidebar_permission( $sidebar_id ) ) {
                return true;
            }
        }

        return $this->permissions_check( $request );
    }

    /** * Checks if a given request has access to get sidebars. * * @since 5.8.0 * * @param WP_REST_Request $request Full details about the request. * @return true|WP_Error True if the request has read access, WP_Error object otherwise. */
    public function get_items_permissions_check( $request ) {
        $this->retrieve_widgets();
        foreach ( wp_get_sidebars_widgets() as $id => $widgets ) {
            $sidebar = $this->get_sidebar( $id );

            if ( ! $sidebar ) {
                continue;
            }

            if ( $this->check_read_permission( $sidebar ) ) {
                return true;
            }
        }

        

if ( $this->manager->doing_ajax() || $this->manager->is_theme_active() ) {
            return;
        }

        $this->old_sidebars_widgets = wp_get_sidebars_widgets();
        add_filter( 'customize_value_old_sidebars_widgets_data', array( $this, 'filter_customize_value_old_sidebars_widgets_data' ) );
        $this->manager->set_post_value( 'old_sidebars_widgets_data', $this->old_sidebars_widgets ); // Override any value cached in changeset.
        // retrieve_widgets() looks at the global $sidebars_widgets.         $sidebars_widgets = $this->old_sidebars_widgets;
        $sidebars_widgets = retrieve_widgets( 'customize' );
        add_filter( 'option_sidebars_widgets', array( $this, 'filter_option_sidebars_widgets_for_theme_switch' ), 1 );
        // Reset global cache var used by wp_get_sidebars_widgets().         unset( $GLOBALS['_wp_sidebars_widgets'] );
    }

    /** * Filters old_sidebars_widgets_data Customizer setting. * * When switching themes, filter the Customizer setting old_sidebars_widgets_data * to supply initial $sidebars_widgets before they were overridden by retrieve_widgets(). * The value for old_sidebars_widgets_data gets set in the old theme's sidebars_widgets * theme_mod. * * @since 3.9.0 * * @see WP_Customize_Widgets::handle_theme_switch() * * @param array $old_sidebars_widgets * @return array */

function _wp_sidebars_changed() {
    global $sidebars_widgets;

    if ( ! is_array( $sidebars_widgets ) ) {
        $sidebars_widgets = wp_get_sidebars_widgets();
    }

    retrieve_widgets( true );
}

/** * Validates and remaps any "orphaned" widgets to wp_inactive_widgets sidebar, * and saves the widget settings. This has to run at least on each theme change. * * For example, let's say theme A has a "footer" sidebar, and theme B doesn't have one. * After switching from theme A to theme B, all the widgets previously assigned * to the footer would be inaccessible. This function detects this scenario, and * moves all the widgets previously assigned to the footer under wp_inactive_widgets. * * Despite the word "retrieve" in the name, this function actually updates the database * and the global `$sidebars_widgets`. For that reason it should not be run on front end, * unless the `$theme_changed` value is 'customize' (to bypass the database write). * * @since 2.8.0 * * @global array $wp_registered_sidebars Registered sidebars. * @global array $sidebars_widgets * @global array $wp_registered_widgets Registered widgets. * * @param string|bool $theme_changed Whether the theme was changed as a boolean. A value * of 'customize' defers updates for the Customizer. * @return array Updated sidebars widgets. */

'name'          => __( 'Inactive Widgets' ),
        'id'            => 'wp_inactive_widgets',
        'class'         => 'inactive-sidebar',
        'description'   => __( 'Drag widgets here to remove them from the sidebar but keep their settings.' ),
        'before_widget' => '',
        'after_widget'  => '',
        'before_title'  => '',
        'after_title'   => '',
    )
);

retrieve_widgets();

// We're saving a widget without JS. if ( isset( $_POST['savewidget'] ) || isset( $_POST['removewidget'] ) ) {
    $widget_id = $_POST['widget-id'];
    check_admin_referer( "save-delete-widget-$widget_id" );

    $number = isset( $_POST['multi_number'] ) ? (int) $_POST['multi_number'] : '';
    if ( $number ) {
        foreach ( $_POST as $key => $val ) {
            if ( is_array( $val ) && preg_match( '/__i__|%i%/', key( $val ) ) ) {
                $_POST[ $key ] = array( $number => array_shift( $val ) );