addValue() protected method
Stores a value identified by a key into cache if the cache does not contain this key. This method should be implemented by child classes to store the data in specific cache storage.
protected boolean addValue ( $key, $value, $duration )$key string
The key identifying the value to be cached $value mixed
The value to be cached. Most often it's a string. If you have disabled $serializer, it could be something else. $duration integer
The number of seconds in w