Manual:Config.php

  is the base interface for implementations that provide access to read and write various configuration settings.

To get the default implementation, use  ,   or  .

Available implementations in core are:
 *  , which can access settings in the   superglobal array.
 *  , which can contain multiple config objects that are acting as fallback sequence.
 *  , which stores the configuration in a member variable, allowing values to be set, rather than only get.

Methods

 * : returns the value of the configuration value named, $name; throws a ConfigException if not set.
 * : returns true or false depending if the config object has the configuration value named, $name stored.