Global variables can be declared in new modules, for example:
global $mysqli, $session;
There are many globals available, here we describe the more relevant ones.
Object that connects to EmonCMS database. It is an instance of the php class mysqli. You can see how to use it the php documentation: http://php.net/manual/en/class.mysqli.php
Redis is an in-memory database (MySQL is in-disk).
$redis is used to reduce the write load to the database.
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Object that is an instance of the class Route. This class is defined in
Once the URL is decoded in index.php the $route object properties are set. For the following URL:
The $route properties are:
$route->controller = controller $route->action = action $route-> subaction = subaction $route-> format = format
Associative array that stores info about permissions after a user or a node has authenticated. $session['userid']: the session has been started by this user or a node that belongs to him/her
Object that is an instance of the class User. This class is defined in
This global variable is useful if you need to deal with: user login, user authentication, set/get user info like username, id, apikeys, email, language or timezone.
To know everything you can do using its methods, have look at the model.