diff options
| -rw-r--r-- | engine/lib/cache.php | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/engine/lib/cache.php b/engine/lib/cache.php index fa5f990df..e8b996e59 100644 --- a/engine/lib/cache.php +++ b/engine/lib/cache.php @@ -127,6 +127,23 @@ */ abstract public function clear(); + /** + * Add a key only if it doesn't already exist. + * Implemented simply here, if you extend this class and your caching engine provides a better way then + * override this accordingly. + * + * @param string $key + * @param string $data + * @return bool + */ + public function add($key, $data) + { + if (!isset($this[$key])) + return $this->save($key, $data); + + return false; + } + // ARRAY ACCESS INTERFACE ////////////////////////////////////////////////////////// function offsetSet($key, $value) { @@ -388,7 +405,7 @@ /** - * A simple function that selects the default caching engine. + * A simple function that selects the default memory caching engine. * * This function provides a central way to get a cache for storing local variables. * |