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function _update_cache_get in Drupal 6

Same name and namespace in other branches

7 modules/update/update.module \_update_cache_get()

Retrieve data from the private update status cache table.

Parameters

$cid: The cache ID to retrieve.

Return value

The data for the given cache ID, or NULL if the ID was not found.

Related topics

Private update status cache system: We specifically do NOT use the core cache API for saving the fetched data about available updates. It is vitally important that this cache is only cleared when we're populating it after successfully fetching new available update data. Usage of…

3 calls to _update_cache_get()

update_cron in modules/update/update.module: Implementation of hook_cron().
update_get_available in modules/update/update.module: Internal helper to try to get the update information from the cache if possible, and to refresh the cache when necessary.
update_project_cache in modules/update/update.compare.inc: Retrieve data from {cache_update} or empty the cache when necessary.

File

modules/update/update.module, line 567: The "Update status" module checks for available updates of Drupal core and any installed contributed modules and themes. It warns site administrators if newer releases are available via the system status report (admin/reports/status), the…

Code

function _update_cache_get($cid) {
  $cache = db_fetch_object(db_query("SELECT data, created, expire, serialized FROM {cache_update} WHERE cid = '%s'", $cid));
  if (isset($cache->data)) {
    $cache->data = db_decode_blob($cache->data);
    if ($cache->serialized) {
      $cache->data = unserialize($cache->data);
    }
  }
  return $cache;
}