Warning: main() [function.main]: Unable to access ../../mainfile.php in header.php on line 11

Warning: main(../../mainfile.php) [function.main]: failed to open stream: No such file or directory in header.php on line 11

Fatal error: main() [function.require]: Failed opening required '../../mainfile.php' (include_path='.:/include/') in header.php on line 11