Stop At Return

I'm running PHP in console mode, on a script which uses: $f = fopen("php://stdin","r"); $data = fread($f,12); fclose($f); To get an IP address (a max of 12 characters), so the question is, how do I stop taking input when they hit return (ie, if there IP is less then the max 12 it will keep waiting for 12 characters of input) any ideas? (Other then to loop through taking what character at a time checking to see if it's the return key.)? Adam Voigt adam.voigt@cryptocomm.com