Package config

This interface represents configuration data which are stored automatically by the config manager. The storage mode is very powerful, it uses a two-level cache and the database.

This is a default and minimal implementation of the ConfigData interface.

This class manages config loading and saving. It makes a two-level lazy loading: <ul> <li>A top-level cache which avoids loading a data if it has already been done since the beginning of the current page generation. This cache has a short life span: it's flushed as of the PHP interpreter reaches the end of the page generation.</li> <li>A filesystem or shared RAM cache to avoid querying the database many times to obtain the same value.

This exception is raised when a configuration entry is load whereas it doesn't exists in the database.

This exception is raised when a not existing property is asked in a ConfigData object.