> I'm wondering what's wrong with the use of __autoload(), since I see that
> projects like the Zend Framework don't use it and prefer to require_once
> each required file.

Things that happen without you explicitly causing them (ie require() et
al) can lead to confusion.

For example a junior developer who doesn't know of its existence and is
new to a job is less likely to admit ignorance and ask how a class is
being defined when __autoload() is being used.

--
Richard Heyes
Employ me:
http://www.phpguru.org/cv