note 18615 deleted from function.filesize by aidan

Note Submitter: mufasa at firetiger dot net ---- NOTE: The filesize() function will report the usuall PHP run-time error _in addition to_ returning false if it can't find the file. I assume any error with this function will report an error too, but I've only tested for the file not found condition. If you're expecting or allowing the script to go on after any such error, just add the @ symbol before it to ignore the error. As always with the @ symbol though, still check any variables that were expected to have a value in them from this function before you use them.