WordPress Version: 6.5
/**
* Registers the form callback for a widget.
*
* @since 2.8.0
* @since 5.3.0 Formalized the existing and already documented `...$params` parameter
* by adding it to the function signature.
*
* @global array $wp_registered_widget_controls The registered widget controls.
*
* @param int|string $id Widget ID.
* @param string $name Name attribute for the widget.
* @param callable $form_callback Form callback.
* @param array $options Optional. Widget control options. See wp_register_widget_control().
* Default empty array.
* @param mixed ...$params Optional additional parameters to pass to the callback function when it's called.
*/
function _register_widget_form_callback($id, $name, $form_callback, $options = array(), ...$params)
{
global $wp_registered_widget_controls;
$id = strtolower($id);
if (empty($form_callback)) {
unset($wp_registered_widget_controls[$id]);
return;
}
if (isset($wp_registered_widget_controls[$id]) && !did_action('widgets_init')) {
return;
}
$defaults = array('width' => 250, 'height' => 200);
$options = wp_parse_args($options, $defaults);
$options['width'] = (int) $options['width'];
$options['height'] = (int) $options['height'];
$widget = array('name' => $name, 'id' => $id, 'callback' => $form_callback, 'params' => $params);
$widget = array_merge($widget, $options);
$wp_registered_widget_controls[$id] = $widget;
}