_register_widget_update_callback() WP 2.8.0
Registers the update callback for a widget.
No Hooks.
Return
Null. Nothing.
Usage
_register_widget_update_callback( $id_base, $update_callback, $options, ...$params );
- $id_base(string) (required)
- The base ID of a widget created by extending WP_Widget.
- $update_callback(callable) (required)
- Update callback method for the widget.
- $options(array)
- Widget control options. See wp_register_widget_control().
Default: empty array - ...$params(mixed) (required)
- Optional additional parameters to pass to the callback function when it's called.
Notes
- Global. Array. $wp_registered_widget_updates
Changelog
Since 2.8.0 | Introduced. |
Since 5.3.0 | Formalized the existing and already documented ...$params parameter by adding it to the function signature. |
Code of _register_widget_update_callback() register widget update callback WP 5.6
function _register_widget_update_callback( $id_base, $update_callback, $options = array(), ...$params ) {
global $wp_registered_widget_updates;
if ( isset( $wp_registered_widget_updates[ $id_base ] ) ) {
if ( empty( $update_callback ) ) {
unset( $wp_registered_widget_updates[ $id_base ] );
}
return;
}
$widget = array(
'callback' => $update_callback,
'params' => $params,
);
$widget = array_merge( $widget, $options );
$wp_registered_widget_updates[ $id_base ] = $widget;
}