getValue() protected method
Retrieves a value from cache with a specified key.
This method should be implemented by child classes to retrieve the data from specific cache storage.
| protected string|boolean getValue ( $key ) | ||
|---|---|---|
| $key | string |
A unique key identifying the cached value |
| return | string|boolean |
The value stored in cache, false if the value is not in the cache or expired. |
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