Well...there is the global operator, and it takes into account the entire running "stack of files" - so include your config.php, lib.php wrappers, which in turn

Well...there is the global operator, and it takes into account the entire running "stack of files" - so include your config.php, lib.php wrappers, which in turn include other files for your application/framework, and then use the global $var tag in every function, and you get a reference to a truly global variable. http://php.net/manual/en/language.variables.scope.php http://php.net/manual/en/language.variables.scope.php PHP also has "superglobals" http://php.net/manual/en/language.variables.superglobals.php http://php.net/manual/en/language.variables.superglobals.php