If you've written code that's had to run under more than one web server environment (even PHP as CGI vs. PHP as module under Apache), you've probably run into headaches like $_SERVER['SCRIPT_FILENAME'] being unavailable Server APIs (SAPIs) vary.
If you've written code that's had to run under more than one web server environment (even PHP as CGI vs. PHP as module under Apache), you've probably run into headaches like $_SERVER['SCRIPT_FILENAME'] being unavailable Server APIs (SAPIs) vary.
