Environment Backup

Set environment variables: globals, static vars, kohana configs etc. and later restore their original values. This is useful testing when you want to have a specific environment set for the test, but don't want that test to affect other code outside of it., _(*1)

The environment class is initialized with some environment groups, each handling specific type of environment. You can easily add more classes to handle different environments., _(*2)

Each environment group that you add allows has a unique name of "naming" its variables so that it knows how to handle their backup, _(*3)

'_POST', '_GET', '_FILES', '_SERVER', '_COOKIE' and '_SESSION' are handled by the 'Environment_Group_Globals',
'REMOTE_HOST', 'CLIENT_IP' and all the other variables inside the '_SERVER' variable are handled by Environment_Group_Server (this is used to easily backup restore only sertain variables of the $_SERVER super global)
'SomeClass::$variable' is used to handle stativ variables - it can backup / restore public, protected and private ones by Environment_Group_Static
'group.config_var' is used to handle Kohana config settings by Environment_Group_Config - this is used only in a Kohana Framwork environment

Example:, _(*4)

$environment = new Environment(array(
    'globals' => new Environment_Group_Globals(),
    'server' => new Environment_Group_Server(),
    'static' => new Environment_Group_Static(),
));

$environment->backup_and_set(array(
    '_POST' => array('new stuff'),
    'REMOTE_HOST' => 'example.com',
    'MyClass::$private_var' => 10
));

// Do some stuff that changes / uses these variables

$environment->restore();