PHP WPSC_Countries::country_id_by_region_id方法代码示例

 /**
  * Create the empty maps used by this class to do it's work.
  *
  * This functions contributes greatly to the performance of the class. Data maps that are named
  * can store and retrieve themselves at the time of the first request. That means they don't need to
  * be rebuilt every time, nor does all of the data have to be loaded and waiting for a request that
  * may never come.
  *
  * Because the geographic data managed by this class can be accessed hundreds or even
  * thousands of times when creating WPeC pages, moderate gains here can translate into
  * substantial gains in end user perfroamnce. For this reason this class will try to keep
  * the smaller frequently references data sets (data maps) intact and always available.
  * Potentially large data sets, such as the global list of all countires with all regions,
  * are only loaded when they are accessed. The WPSC_Data_Map provides the transpernet
  * loading and creating functions for these data sets.
  *
  *
  * @access private
  *
  * @static
  *
  * @since 3.8.14
  *
  */
 private static function _clean_data_maps()
 {
     /*
      * maps without names will be loaded with the core class, we maintain
      * a list as they are created
      */
     self::$_maps_to_save_with_core_class = array();
     // at 3.8.14 checked and this is about 1 KB of data
     if (is_a(self::$region_by_region_id, 'WPSC_Data_Map')) {
         self::$region_by_region_id->clear();
     } else {
         self::$region_by_region_id = new WPSC_Data_Map(null, array(__CLASS__, '_create_region_by_region_id_map'));
     }
     self::$_maps_to_save_with_core_class['region_by_region_id'] = true;
     // at 3.14 checked and this is about 1 KB of data
     if (is_a(self::$region_code_by_region_id, 'WPSC_Data_Map')) {
         self::$region_code_by_region_id->clear();
     } else {
         self::$region_code_by_region_id = new WPSC_Data_Map(null, array(__CLASS__, '_create_region_code_by_region_id_map'));
     }
     self::$_maps_to_save_with_core_class['region_code_by_region_id'] = true;
     // at 3.8.14 checked and this is about 1 KB of data
     if (is_a(self::$country_id_by_region_id, 'WPSC_Data_Map')) {
         self::$country_id_by_region_id->clear();
     } else {
         self::$country_id_by_region_id = new WPSC_Data_Map(null, array(__CLASS__, '_create_country_id_by_region_id_map'));
     }
     self::$_maps_to_save_with_core_class['country_id_by_region_id'] = true;
     // at 3.8.14 checked and this is about 1 KB of data
     if (is_a(self::$country_id_by_iso_code, 'WPSC_Data_Map')) {
         self::$country_id_by_iso_code->clear();
     } else {
         self::$country_id_by_iso_code = new WPSC_Data_Map(null, array(__CLASS__, '_create_country_id_by_iso_code_map'));
     }
     self::$_maps_to_save_with_core_class['country_id_by_iso_code'] = true;
     // at 3.8.14 checked and this is about 1 KB of data
     if (is_a(self::$country_code_by_country_id, 'WPSC_Data_Map')) {
         self::$country_code_by_country_id->clear();
     } else {
         self::$country_code_by_country_id = new WPSC_Data_Map(null, array(__CLASS__, '_create_country_code_by_country_id'));
     }
     self::$_maps_to_save_with_core_class['country_code_by_country_id'] = true;
     // at 3.8.14 checked and this is about 2KB of data with 7 countries active, including US and CA
     if (is_a(self::$active_wpsc_country_by_country_id, 'WPSC_Data_Map')) {
         self::$active_wpsc_country_by_country_id->clear();
     } else {
         self::$active_wpsc_country_by_country_id = new WPSC_Data_Map(null, array(__CLASS__, '_create_active_countries_map'));
     }
     self::$_maps_to_save_with_core_class['active_wpsc_country_by_country_id'] = true;
     // at 3.8.14 checked and this is about 1 KB of data
     if (is_a(self::$currencies, 'WPSC_Data_Map')) {
         self::$currencies->clear();
     } else {
         self::$currencies = new WPSC_Data_Map(null, array(__CLASS__, '_create_currency_by_currency_code_map'));
     }
     self::$_maps_to_save_with_core_class['currencies'] = true;
     /*
      * maps with names can optionally reload thier data themselves when the first request
      * is processed, this class does not need to load/ re-load them because the WPSC_Data_Map
      * class takes care of that transparently. This goes a long way towards keeping the size of
      * of the transient used to cache this classes data small, making WPeC intitialization faster.
      */
     // at 3.14 checked and this is about 3KB of data, this map isn't as frequently used so we will load it if it
     // needed
     if (is_a(self::$country_id_by_country_name, 'WPSC_Data_Map')) {
         self::$country_id_by_country_name->clear();
     } else {
         self::$country_id_by_country_name = new WPSC_Data_Map('$country_id_by_country_name', array(__CLASS__, '_create_country_id_by_country_name_map'));
     }
     self::$_maps_to_save_with_core_class['country_id_by_country_name'] = false;
     // at 3.14 checked and this is about 23KB of data, not a big hit if there is a memory based object cache
     // but impacts perfomance on lower end (default) configurations that use the database to store transients
     if (is_a(self::$all_wpsc_country_by_country_id, 'WPSC_Data_Map')) {
         self::$all_wpsc_country_by_country_id->clear();
     } else {
         self::$all_wpsc_country_by_country_id = new WPSC_Data_Map('$all_wpsc_country_by_country_id', array(__CLASS__, '_create_all_countries_map'));
//.........这里部分代码省略.........