With Microsoft Windows applications you have something called “dll hell”. Anyone who has tried to deploy a app knows what I am talking about when I say “dll hell”. PHP has its own version of “dll hell” called “include hell”. “Include hell” comes when you are including multiple versions of a particular php file in one php script that wants a particular version, this usually happens with PEAR, for example; a older version is installed by the host and included in php.ini; the customer rolls their own version of PEAR and includes in it via .htaccess; and a package comes with its own version of PEAR and includes it by file. Thus we have three different versions of PEAR floating around and causing function creation errors.
