_register_widget_update_callback( string $id_base, callable $update_callback, array $options = array() )

Registers the update callback for a widget.

Parameters

$id_base

(Required) The base ID of a widget created by extending WP_Widget.

$update_callback

(Required) Update callback method for the widget.

$options

(Optional) Widget control options. See wp_register_widget_control().

Default value: array()

Source

File: wp-includes/widgets.php 

function _register_widget_update_callback( $id_base, $update_callback, $options = array() ) {
	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' => array_slice(func_get_args(), 3)
	);

	$widget = array_merge($widget, $options);
	$wp_registered_widget_updates[$id_base] = $widget;
}

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Related

Used By

Used By
Used By Description
wp-includes/class-wp-widget.php: WP_Widget::_register_one()

Registers an instance of the widget class.

Changelog

Changelog
Version Description
WP-2.8.0 Introduced.