Classe: PHP_Shell_Extensions_AutoloadDebug  - X-Ref

Autoload debugging

The internal __autoload() function of the shell-wrapper has two hooks.
The first is called before the include is done, the second afterwards.

we use it to track the order the includes are handled. That makes it
easier to find implicit dependency problems.

:set autoloaddebug = on
:set autoloaddebug = off

the depth functions track the recursive depth of the includes. The
wrapper uses it to print the dots at the beginning of the line.