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<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
* Widgets and Sidebars Library
*
* Helper functions for manipulating widgets on a per-blog basis.
* Only helpful on `wp_loaded` or later (currently requires widgets to be registered and the theme context to already be loaded).
*
* Used by the REST API
*
* @package automattic/jetpack
*/
/**
* Widgets and Sidebars Library
*/
class Jetpack_Widgets {
/**
* Returns the `sidebars_widgets` option with the `array_version` element removed.
*
* @return array The current value of sidebars_widgets
*/
public static function get_sidebars_widgets() {
$sidebars = get_option( 'sidebars_widgets', array() );
if ( isset( $sidebars['array_version'] ) ) {
unset( $sidebars['array_version'] );
}
return $sidebars;
}
/**
* Format widget data for output and for use by other widget functions.
*
* The output looks like:
*
* array(
* 'id' => 'text-3',
* 'sidebar' => 'sidebar-1',
* 'position' => '0',
* 'settings' => array(
* 'title' => 'hello world'
* )
* )
*
* @param string|integer $position The position of the widget in its sidebar.
* @param string $widget_id The widget's id (eg: 'text-3').
* @param string $sidebar The widget's sidebar id (eg: 'sidebar-1').
* @param array (Optional) $settings The settings for the widget.
*
* @return array A normalized array representing this widget.
*/
public static function format_widget( $position, $widget_id, $sidebar, $settings = null ) {
if ( ! $settings ) {
$all_settings = get_option( self::get_widget_option_name( $widget_id ) );
$instance = self::get_widget_instance_key( $widget_id );
$settings = $all_settings[ $instance ];
}
$widget = array();
$widget['id'] = $widget_id;
$widget['id_base'] = self::get_widget_id_base( $widget_id );
$widget['settings'] = $settings;
$widget['sidebar'] = $sidebar;
$widget['position'] = $position;
return $widget;
}
/**
* Return a widget's id_base from its id.
*
* @param string $widget_id The id of a widget. (eg: 'text-3').
*
* @return string The id_base of a widget (eg: 'text').
*/
public static function get_widget_id_base( $widget_id ) {
// Grab what's before the hyphen.
return substr( $widget_id, 0, strrpos( $widget_id, '-' ) );
}
/**
* Determine a widget's option name (the WP option where the widget's settings
* are stored - generally `widget_` + the widget's id_base).
*
* @param string $widget_id The id of a widget. (eg: 'text-3').
*
* @return string The option name of the widget's settings. (eg: 'widget_text')
*/
public static function get_widget_option_name( $widget_id ) {
return 'widget_' . self::get_widget_id_base( $widget_id );
}
/**
* Determine a widget instance key from its ID. (eg: 'text-3' becomes '3').
* Used to access the widget's settings.
*
* @param string $widget_id The id of a widget.
*
* @return integer The instance key of that widget.
*/
public static function get_widget_instance_key( $widget_id ) {
// Grab all numbers from the end of the id.
preg_match( '/(\d+)$/', $widget_id, $matches );
return (int) $matches[0];
}
/**
* Return a widget by ID (formatted for output) or null if nothing is found.
*
* @param string $widget_id The id of a widget to look for.
*
* @return array|null The matching formatted widget (see format_widget).
*/
public static function get_widget_by_id( $widget_id ) {
$found = null;
foreach ( self::get_all_widgets() as $widget ) {
if ( $widget['id'] === $widget_id ) {
$found = $widget;
}
}
return $found;
}
/**
* Return an array of all widgets (active and inactive) formatted for output.
*
* @return array An array of all widgets (see format_widget).
*/
public static function get_all_widgets() {
$all_widgets = array();
$sidebars_widgets = self::get_all_sidebars();
foreach ( $sidebars_widgets as $sidebar => $widgets ) {
if ( ! is_array( $widgets ) ) {
continue;
}
foreach ( $widgets as $key => $widget_id ) {
array_push( $all_widgets, self::format_widget( $key, $widget_id, $sidebar ) );
}
}
return $all_widgets;
}
/**
* Return an array of all active widgets formatted for output.
*
* @return array An array of all active widgets (see format_widget).
*/
public static function get_active_widgets() {
$active_widgets = array();
$all_widgets = self::get_all_widgets();
foreach ( $all_widgets as $widget ) {
if ( 'wp_inactive_widgets' === $widget['sidebar'] ) {
continue;
}
array_push( $active_widgets, $widget );
}
return $active_widgets;
}
/**
* Return an array of all widget IDs (active and inactive)
*
* @return array An array of all widget IDs.
*/
public static function get_all_widget_ids() {
$all_widgets = array();
$sidebars_widgets = self::get_all_sidebars();
foreach ( array_values( $sidebars_widgets ) as $widgets ) {
if ( ! is_array( $widgets ) ) {
continue;
}
foreach ( array_values( $widgets ) as $widget_id ) {
array_push( $all_widgets, $widget_id );
}
}
return $all_widgets;
}
/**
* Return an array of widgets with a specific id_base (eg: `text`).
*
* @param string $id_base The id_base of a widget type.
*
* @return array All the formatted widgets matching that widget type (see format_widget).
*/
public static function get_widgets_with_id_base( $id_base ) {
$matching_widgets = array();
foreach ( self::get_all_widgets() as $widget ) {
if ( self::get_widget_id_base( $widget['id'] ) === $id_base ) {
array_push( $matching_widgets, $widget );
}
}
return $matching_widgets;
}
/**
* Return the array of widget IDs in a sidebar or null if that sidebar does
* not exist. Will return an empty array for an existing empty sidebar.
*
* @param string $sidebar The id of a sidebar.
*
* @return array|null The array of widget IDs in the sidebar.
*/
public static function get_widgets_in_sidebar( $sidebar ) {
$sidebars = self::get_all_sidebars();
if ( ! $sidebars || ! is_array( $sidebars ) ) {
return null;
}
if ( ! $sidebars[ $sidebar ] && array_key_exists( $sidebar, $sidebars ) ) {
return array();
}
return $sidebars[ $sidebar ];
}
/**
* Return an associative array of all registered sidebars for this theme,
* active and inactive, including the hidden disabled widgets sidebar (keyed
* by `wp_inactive_widgets`). Each sidebar is keyed by the ID of the sidebar
* and its value is an array of widget IDs for that sidebar.
*
* @return array An associative array of all sidebars and their widget IDs.
*/
public static function get_all_sidebars() {
$sidebars_widgets = self::get_sidebars_widgets();
if ( ! is_array( $sidebars_widgets ) ) {
return array();
}
return $sidebars_widgets;
}
/**
* Return an associative array of all active sidebars for this theme, Each
* sidebar is keyed by the ID of the sidebar and its value is an array of
* widget IDs for that sidebar.
*
* @return array An associative array of all active sidebars and their widget IDs.
*/
public static function get_active_sidebars() {
$sidebars = array();
foreach ( self::get_all_sidebars() as $sidebar => $widgets ) {
if ( 'wp_inactive_widgets' === $sidebar || ! isset( $widgets ) || ! is_array( $widgets ) ) {
continue;
}
$sidebars[ $sidebar ] = $widgets;
}
return $sidebars;
}
/**
* Activates a widget in a sidebar. Does not validate that the sidebar exists,
* so please do that first. Also does not save the widget's settings. Please
* do that with `set_widget_settings`.
*
* If position is not set, it will be set to the next available position.
*
* @param string $widget_id The newly-formed id of the widget to be added.
* @param string $sidebar The id of the sidebar where the widget will be added.
* @param string|integer $position (Optional) The position within the sidebar where the widget will be added.
*
* @return bool
*/
public static function add_widget_to_sidebar( $widget_id, $sidebar, $position ) {
return self::move_widget_to_sidebar( array( 'id' => $widget_id ), $sidebar, $position );
}
/**
* Removes a widget from a sidebar. Does not validate that the sidebar exists
* or remove any settings from the widget, so please do that separately.
*
* @param array $widget The widget to be removed.
*/
public static function remove_widget_from_sidebar( $widget ) {
$sidebars_widgets = self::get_sidebars_widgets();
// Remove the widget from its old location and reflow the positions of the remaining widgets.
array_splice( $sidebars_widgets[ $widget['sidebar'] ], $widget['position'], 1 );
update_option( 'sidebars_widgets', $sidebars_widgets );
}
/**
* Moves a widget to a sidebar. Does not validate that the sidebar exists,
* so please do that first. Also does not save the widget's settings. Please
* do that with `set_widget_settings`. The first argument should be a
* widget as returned by `format_widget` including `id`, `sidebar`, and
* `position`.
*
* If $position is not set, it will be set to the next available position.
*
* Can be used to add a new widget to a sidebar if
* $widget['sidebar'] === NULL
*
* Can be used to move a widget within a sidebar as well if
* $widget['sidebar'] === $sidebar.
*
* @param array $widget The widget to be moved (see format_widget).
* @param string $sidebar The sidebar where this widget will be moved.
* @param string|integer $position (Optional) The position where this widget will be moved in the sidebar.
*
* @return bool
*/
public static function move_widget_to_sidebar( $widget, $sidebar, $position ) {
$sidebars_widgets = self::get_sidebars_widgets();
/*
* If a position is passed and the sidebar isn't empty,
* splice the widget into the sidebar,
* update the sidebar option, and return the result.
*/
if ( isset( $widget['sidebar'] ) && isset( $widget['position'] ) ) {
array_splice( $sidebars_widgets[ $widget['sidebar'] ], $widget['position'], 1 );
}
// Sometimes an existing empty sidebar is NULL, so initialize it.
if ( array_key_exists( $sidebar, $sidebars_widgets ) && ! is_array( $sidebars_widgets[ $sidebar ] ) ) {
$sidebars_widgets[ $sidebar ] = array();
}
// If no position is passed, set one from items in sidebar.
if ( ! isset( $position ) ) {
$position = 0;
$last_position = self::get_last_position_in_sidebar( $sidebar );
if ( isset( $last_position ) && is_numeric( $last_position ) ) {
$position = $last_position + 1;
}
}
// Add the widget to the sidebar and reflow the positions of the other widgets.
if ( empty( $sidebars_widgets[ $sidebar ] ) ) {
$sidebars_widgets[ $sidebar ][] = $widget['id'];
} else {
array_splice( $sidebars_widgets[ $sidebar ], (int) $position, 0, $widget['id'] );
}
set_theme_mod(
'sidebars_widgets',
array(
'time' => time(),
'data' => $sidebars_widgets,
)
);
return update_option( 'sidebars_widgets', $sidebars_widgets );
}
/**
* Return an integer containing the largest position number in a sidebar or
* null if there are no widgets in that sidebar.
*
* @param string $sidebar The id of a sidebar.
*
* @return integer|null The last index position of a widget in that sidebar.
*/
public static function get_last_position_in_sidebar( $sidebar ) {
$widgets = self::get_widgets_in_sidebar( $sidebar );
if ( ! $widgets ) {
return null;
}
$last_position = 0;
foreach ( $widgets as $widget_id ) {
$widget = self::get_widget_by_id( $widget_id );
if ( (int) $widget['position'] > (int) $last_position ) {
$last_position = (int) $widget['position'];
}
}
return $last_position;
}
/**
* Saves settings for a widget. Does not add that widget to a sidebar. Please
* do that with `move_widget_to_sidebar` first. Will merge the settings of
* any existing widget with the same `$widget_id`.
*
* @param string $widget_id The id of a widget.
* @param array $settings An associative array of settings to merge with any existing settings on this widget.
*
* @return boolean|WP_Error True if update was successful.
*/
public static function set_widget_settings( $widget_id, $settings ) {
$widget_option_name = self::get_widget_option_name( $widget_id );
$widget_settings = get_option( $widget_option_name );
$instance_key = self::get_widget_instance_key( $widget_id );
$old_settings = $widget_settings[ $instance_key ];
$settings = self::sanitize_widget_settings( $widget_id, $settings, $old_settings );
if ( ! $settings ) {
return new WP_Error( 'invalid_data', 'Update failed.', 500 );
}
if ( is_array( $old_settings ) ) {
// array_filter prevents empty arguments from replacing existing ones.
$settings = wp_parse_args( array_filter( $settings ), $old_settings );
}
$widget_settings[ $instance_key ] = $settings;
return update_option( $widget_option_name, $widget_settings );
}
/**
* Sanitize an associative array for saving.
*
* @param string $widget_id The id of a widget.
* @param array $settings A widget settings array.
* @param array $old_settings The existing widget settings array.
*
* @return array|false The settings array sanitized by `WP_Widget::update` or false if sanitization failed.
*/
private static function sanitize_widget_settings( $widget_id, $settings, $old_settings ) {
$widget = self::get_registered_widget_object( self::get_widget_id_base( $widget_id ) );
if ( ! $widget ) {
return false;
}
$new_settings = $widget->update( $settings, $old_settings );
if ( ! is_array( $new_settings ) ) {
return false;
}
return $new_settings;
}
/**
* Deletes settings for a widget. Does not remove that widget to a sidebar. Please
* do that with `remove_widget_from_sidebar` first.
*
* @param array $widget The widget which will have its settings removed (see format_widget).
*/
public static function remove_widget_settings( $widget ) {
$widget_option_name = self::get_widget_option_name( $widget['id'] );
$widget_settings = get_option( $widget_option_name );
unset( $widget_settings[ self::get_widget_instance_key( $widget['id'] ) ] );
update_option( $widget_option_name, $widget_settings );
}
/**
* Update a widget's settings, sidebar, and position. Returns the (updated)
* formatted widget if successful or a WP_Error if it fails.
*
* @param string $widget_id The id of a widget to update.
* @param string $sidebar (Optional) A sidebar to which this widget will be moved.
* @param string|integer $position (Optional) A new position to which this widget will be moved within its new or existing sidebar.
* @param array|object|string $settings Settings to merge with the existing settings of the widget (will be passed through `decode_settings`).
*
* @return array|WP_Error The newly added widget as an associative array with all the above properties.
*/
public static function update_widget( $widget_id, $sidebar, $position, $settings ) {
$settings = self::decode_settings( $settings );
if ( isset( $settings ) && ! is_array( $settings ) ) {
return new WP_Error( 'invalid_data', 'Invalid settings', 400 );
}
// Default to an empty array if nothing is specified.
if ( ! is_array( $settings ) ) {
$settings = array();
}
$widget = self::get_widget_by_id( $widget_id );
if ( ! $widget ) {
return new WP_Error( 'not_found', 'No widget found.', 400 );
}
if ( ! $sidebar ) {
$sidebar = $widget['sidebar'];
}
if ( ! isset( $position ) ) {
$position = $widget['position'];
}
if ( ! is_numeric( $position ) ) {
return new WP_Error( 'invalid_data', 'Invalid position', 400 );
}
$widgets_in_sidebar = self::get_widgets_in_sidebar( $sidebar );
if ( ! isset( $widgets_in_sidebar ) ) {
return new WP_Error( 'invalid_data', 'No such sidebar exists', 400 );
}
self::move_widget_to_sidebar( $widget, $sidebar, $position );
$widget_save_status = self::set_widget_settings( $widget_id, $settings );
if ( is_wp_error( $widget_save_status ) ) {
return $widget_save_status;
}
return self::get_widget_by_id( $widget_id );
}
/**
* Deletes a widget entirely including all its settings. Returns a WP_Error if
* the widget could not be found. Otherwise returns an empty array.
*
* @param string $widget_id The id of a widget to delete. (eg: 'text-2').
*
* @return array|WP_Error An empty array if successful.
*/
public static function delete_widget( $widget_id ) {
$widget = self::get_widget_by_id( $widget_id );
if ( ! $widget ) {
return new WP_Error( 'not_found', 'No widget found.', 400 );
}
self::remove_widget_from_sidebar( $widget );
self::remove_widget_settings( $widget );
return array();
}
/**
* Return an array of settings. The input can be either an object, a JSON
* string, or an array.
*
* @param array|string|object $settings The settings of a widget as passed into the API.
*
* @return array Decoded associative array of settings.
*/
public static function decode_settings( $settings ) {
// Treat as string in case JSON was passed.
if ( is_object( $settings ) && property_exists( $settings, 'scalar' ) ) {
$settings = $settings->scalar;
}
if ( is_object( $settings ) ) {
$settings = (array) $settings;
}
// Attempt to decode JSON string.
if ( is_string( $settings ) ) {
$settings = (array) json_decode( $settings );
}
return $settings;
}
/**
* Activate a new widget.
*
* @param string $id_base The id_base of the new widget (eg: 'text').
* @param string $sidebar The id of the sidebar where this widget will go. Dependent on theme. (eg: 'sidebar-1').
* @param string|integer $position (Optional) The position of the widget in the sidebar. Defaults to the last position.
* @param array|object|string $settings (Optional) An associative array of settings for this widget (will be passed through `decode_settings`). Varies by widget.
*
* @return array|WP_Error The newly added widget as an associative array with all the above properties except 'id_base' replaced with the generated 'id'.
*/
public static function activate_widget( $id_base, $sidebar, $position, $settings ) {
if ( ! isset( $id_base ) || ! self::validate_id_base( $id_base ) ) {
return new WP_Error( 'invalid_data', 'Invalid ID base', 400 );
}
if ( ! isset( $sidebar ) ) {
return new WP_Error( 'invalid_data', 'No sidebar provided', 400 );
}
if ( isset( $position ) && ! is_numeric( $position ) ) {
return new WP_Error( 'invalid_data', 'Invalid position', 400 );
}
$settings = self::decode_settings( $settings );
if ( isset( $settings ) && ! is_array( $settings ) ) {
return new WP_Error( 'invalid_data', 'Invalid settings', 400 );
}
// Default to an empty array if nothing is specified.
if ( ! is_array( $settings ) ) {
$settings = array();
}
$widget_counter = 1 + self::get_last_widget_instance_key_with_id_base( $id_base );
$widget_id = $id_base . '-' . $widget_counter;
if ( 0 >= $widget_counter ) {
return new WP_Error( 'invalid_data', 'Error creating widget ID' . $widget_id, 500 );
}
if ( self::get_widget_by_id( $widget_id ) ) {
return new WP_Error( 'invalid_data', 'Widget ID already exists', 500 );
}
self::add_widget_to_sidebar( $widget_id, $sidebar, $position );
$widget_save_status = self::set_widget_settings( $widget_id, $settings );
if ( is_wp_error( $widget_save_status ) ) {
return $widget_save_status;
}
// Add a Tracks event for non-Headstart activity.
if ( ! defined( 'HEADSTART' ) ) {
$tracking = new Automattic\Jetpack\Tracking();
$tracking->tracks_record_event(
wp_get_current_user(),
'wpcom_widgets_activate_widget',
array(
'widget' => $id_base,
'settings' => wp_json_encode( $settings ),
)
);
}
return self::get_widget_by_id( $widget_id );
}
/**
* Activate an array of new widgets. Like calling `activate_widget` multiple times.
*
* @param array $widgets An array of widget arrays. Each sub-array must be of the format required by `activate_widget`.
*
* @return array|WP_Error The newly added widgets in the form returned by `get_all_widgets`.
*/
public static function activate_widgets( $widgets ) {
if ( ! is_array( $widgets ) ) {
return new WP_Error( 'invalid_data', 'Invalid widgets', 400 );
}
$added_widgets = array();
foreach ( $widgets as $widget ) {
$added_widgets[] = self::activate_widget( $widget['id_base'], $widget['sidebar'], $widget['position'], $widget['settings'] );
}
return $added_widgets;
}
/**
* Return the last instance key (integer) of an existing widget matching
* `$id_base`. So if you pass in `text`, and there is a widget with the id
* `text-2`, this function will return `2`.
*
* @param string $id_base The id_base of a type of widget. (eg: 'rss').
*
* @return integer The last instance key of that type of widget.
*/
public static function get_last_widget_instance_key_with_id_base( $id_base ) {
$similar_widgets = self::get_widgets_with_id_base( $id_base );
if ( ! empty( $similar_widgets ) ) {
// If the last widget with the same name is `text-3`, we want `text-4`.
usort( $similar_widgets, __CLASS__ . '::sort_widgets' );
$last_widget = array_pop( $similar_widgets );
$last_val = (int) self::get_widget_instance_key( $last_widget['id'] );
return $last_val;
}
return 0;
}
/**
* Method used to sort widgets
*
* @since 5.4
*
* @param array $a A normalized array representing a widget.
* @param array $b A normalized array representing a widget.
*
* @return int
*/
public static function sort_widgets( $a, $b ) {
$a_val = (int) self::get_widget_instance_key( $a['id'] );
$b_val = (int) self::get_widget_instance_key( $b['id'] );
if ( $a_val > $b_val ) {
return 1;
}
if ( $a_val < $b_val ) {
return -1;
}
return 0;
}
/**
* Retrieve a given widget object instance by ID base (eg. 'text' or 'archives').
*
* @param string $id_base The id_base of a type of widget.
*
* @return WP_Widget|false The found widget object or false if the id_base was not found.
*/
public static function get_registered_widget_object( $id_base ) {
if ( ! $id_base ) {
return false;
}
// Get all of the registered widgets.
global $wp_widget_factory;
if ( ! isset( $wp_widget_factory ) ) {
return false;
}
$registered_widgets = $wp_widget_factory->widgets;
if ( empty( $registered_widgets ) ) {
return false;
}
foreach ( array_values( $registered_widgets ) as $registered_widget_object ) {
if ( $registered_widget_object->id_base === $id_base ) {
return $registered_widget_object;
}
}
return false;
}
/**
* Validate a given widget ID base (eg. 'text' or 'archives').
*
* @param string $id_base The id_base of a type of widget.
*
* @return boolean True if the widget is of a known type.
*/
public static function validate_id_base( $id_base ) {
return ( false !== self::get_registered_widget_object( $id_base ) );
}
/**
* Insert a new widget in a given sidebar.
*
* @param string $widget_id ID of the widget.
* @param array $widget_options Content of the widget.
* @param string $sidebar ID of the sidebar to which the widget will be added.
*
* @return WP_Error|true True when data has been saved correctly, error otherwise.
*/
public static function insert_widget_in_sidebar( $widget_id, $widget_options, $sidebar ) {
// Retrieve sidebars, widgets and their instances.
$sidebars_widgets = get_option( 'sidebars_widgets', array() );
$widget_instances = get_option( 'widget_' . $widget_id, array() );
// Retrieve the key of the next widget instance.
$numeric_keys = array_filter( array_keys( $widget_instances ), 'is_int' );
$next_key = $numeric_keys ? max( $numeric_keys ) + 1 : 2;
// Add this widget to the sidebar.
if ( ! isset( $sidebars_widgets[ $sidebar ] ) ) {
$sidebars_widgets[ $sidebar ] = array();
}
$sidebars_widgets[ $sidebar ][] = $widget_id . '-' . $next_key;
// Add the new widget instance.
$widget_instances[ $next_key ] = $widget_options;
// Store updated sidebars, widgets and their instances.
if (
! ( update_option( 'sidebars_widgets', $sidebars_widgets ) )
|| ( ! ( update_option( 'widget_' . $widget_id, $widget_instances ) ) )
) {
return new WP_Error( 'widget_update_failed', 'Failed to update widget or sidebar.', 400 );
}
return true;
}
/**
* Update the content of an existing widget in a given sidebar.
*
* @param string $widget_id ID of the widget.
* @param array $widget_options New content for the update.
* @param string $sidebar ID of the sidebar to which the widget will be added.
*
* @return WP_Error|true True when data has been updated correctly, error otherwise.
*/
public static function update_widget_in_sidebar( $widget_id, $widget_options, $sidebar ) {
// Retrieve sidebars, widgets and their instances.
$sidebars_widgets = get_option( 'sidebars_widgets', array() );
$widget_instances = get_option( 'widget_' . $widget_id, array() );
// Retrieve index of first widget instance in that sidebar.
$widget_key = false;
foreach ( $sidebars_widgets[ $sidebar ] as $widget ) {
if ( strpos( $widget, $widget_id ) !== false ) {
$widget_key = absint( str_replace( $widget_id . '-', '', $widget ) );
break;
}
}
// There is no widget instance.
if ( ! $widget_key ) {
return new WP_Error( 'invalid_data', 'No such widget.', 400 );
}
// Update the widget instance and option if the data has changed.
if ( $widget_instances[ $widget_key ]['title'] !== $widget_options['title']
|| $widget_instances[ $widget_key ]['address'] !== $widget_options['address']
) {
$widget_instances[ $widget_key ] = array_merge( $widget_instances[ $widget_key ], $widget_options );
// Store updated widget instances and return Error when not successful.
if ( ! ( update_option( 'widget_' . $widget_id, $widget_instances ) ) ) {
return new WP_Error( 'widget_update_failed', 'Failed to update widget.', 400 );
}
}
return true;
}
/**
* Retrieve the first active sidebar.
*
* @return string|WP_Error First active sidebar, error if none exists.
*/
public static function get_first_sidebar() {
$active_sidebars = get_option( 'sidebars_widgets', array() );
unset( $active_sidebars['wp_inactive_widgets'], $active_sidebars['array_version'] );
if ( empty( $active_sidebars ) ) {
return false;
}
$active_sidebars_keys = array_keys( $active_sidebars );
return array_shift( $active_sidebars_keys );
}
}