this file is using php's file_exists() function to look at itself.
the function ONLY works correctly if a RELATIVE path for the filename is used!
if an absolute path is used, is ALWAYS reports the file doesn't exist!

good file is ../bugs/fileexist.php and it exists? - true
bad file is /bugs/fileexist.php and it exists? - false

here's the code used in this file: fileexist.php
This system is running PHP 4.2.3, and Apache/1.3.23
and runs on (Red-Hat/Linux) PHP/4.2.3