$handle = @fopen("/tmp/inputfile.txt", "r");
The function seems to work the same with or without the @ sign.
This is found in an example at http://us.php.net/manual/en/function.fgets.php
There is no explanation given there about what the @ sign does. Maybe it's just a mis-print.
Well, nevermind I found the answer here:
http://ist.marshall.edu/ist263/l27.html