thought stdin was supposed to default open

hello, I read that in the cli version of php, the 3 files, sterror, stdout and stdin are already open thus saving having to open them and close them each time. Well, I decided to test that idea and it appears that stdin infact is not pre-opened, but my code may be wrong too, who knows. I made a little test script (see below), but either it ends up outputting nothing, or i get the "... assumed 'STDIN'" and "supplied argument is not a valid resource...." but on the same line. anyway, code is below <?php while(STDIN != '\n'); { $line = fgets(STDIN); echo $line; } ?> simple script, but it appears not to work. is it my code, or is STDIN not opened by default in php4.4 this is on slackware linux version 10.2 running php -v 4.4 matt