public function DatabaseStorage::has
public DatabaseStorage::has($key)
Returns whether a given key exists in the store.
Parameters
string $key: The key to check.
Return value
bool TRUE if the key exists, FALSE otherwise.
Overrides KeyValueStoreInterface::has
File
- core/lib/Drupal/Core/KeyValueStore/DatabaseStorage.php, line 63
Class
- DatabaseStorage
- Defines a default key/value store implementation.
Namespace
Drupal\Core\KeyValueStoreCode
public function has($key) { return (bool) $this->connection->query('SELECT 1 FROM {' . $this->connection->escapeTable($this->table) . '} WHERE collection = :collection AND name = :key', array( ':collection' => $this->collection, ':key' => $key, ))->fetchField(); }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!KeyValueStore!DatabaseStorage.php/function/DatabaseStorage::has/8.1.x