php global object without class

[noescape]

Hi.

in open source package moodle i came across "global $CFG" line of code in setup.php

in config it is used as

$CFG->dbtype    = 'mysql';
$CFG->dbhost    = 'localhost';
 ............

$CFG is global object but there is no class. it is behaving like an array.
how there can be object without class? please put some light. this is my first encouter with this type of code.

is it just another kind of array?

thanks

[chrishea]

There is a default PHP class/object called stdClass. When you define variables this way without first defining a class, it will make them part of stdClass.

[noescape]

Thanks.