function DrupalDatabaseCache::isEmpty
DrupalDatabaseCache::isEmpty()
Implements DrupalCacheInterface::isEmpty().
Overrides DrupalCacheInterface::isEmpty
File
- includes/cache.inc, line 550
- Functions and interfaces for cache handling.
Class
- DrupalDatabaseCache
- Defines a default cache implementation.
Code
function isEmpty() { $this->garbageCollection(); $query = db_select($this->bin); $query->addExpression('1'); $result = $query->range(0, 1) ->execute() ->fetchField(); return empty($result); }
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https://api.drupal.org/api/drupal/includes!cache.inc/function/DrupalDatabaseCache::isEmpty/7.x