February 12, 2011 
Definition:
function is_active_widget($callback = false, $widget_id = false, $id_base = false, $skip_inactive = true) {}
Whether widget is displayed on the front-end.
Either $callback or $id_base can be used $id_base is the first argument when extending WP_Widget class Without the optional $widget_id parameter, returns the ID of the first sidebar in which the first instance of the widget with the given callback or $id_base is found. With the $widget_id parameter, returns the ID of the sidebar where the widget with that callback/$id_base AND that ID is found.
Parameters
- string $callback: Optional, Widget callback to check.
- int $widget_id: Optional, but needed for checking. Widget ID.
- string $id_base: Optional, the base ID of a widget created by extending WP_Widget.
- bool $skip_inactive: Optional, whether to check in ‘wp_inactive_widgets’.
Return values
returns:false if widget is not active or id of sidebar in which the widget is active.
Source code
function is_active_widget($callback = false, $widget_id = false, $id_base = false, $skip_inactive = true) {
global $wp_registered_widgets;
$sidebars_widgets = wp_get_sidebars_widgets();
if ( is_array($sidebars_widgets) ) {
foreach ( $sidebars_widgets as $sidebar => $widgets ) {
if ( $skip_inactive && 'wp_inactive_widgets' == $sidebar )
continue;
if ( is_array($widgets) ) {
foreach ( $widgets as $widget ) {
if ( ( $callback && isset($wp_registered_widgets[$widget]['callback']) && $wp_registered_widgets[$widget]['callback'] == $callback ) || ( $id_base && _get_widget_id_base($widget) == $id_base ) ) {
if ( !$widget_id || $widget_id == $wp_registered_widgets[$widget]['id'] )
return $sidebar;
}
}
}
}
}
return false;
}
2083
A HitchHackers guide through WordPress 
No comments yet... Be the first to leave a reply!