#19944 [Fbk]: fgets() returns garbage when STDIN set to non-blocking

ID: 19944 Updated by: wez@php.net Reported By: ces@vaultbbs.com Status: Feedback Bug Type: Sockets related Operating System: RedHat 7.3 PHP Version: 4.3.0-pre1 New Comment: As an aside: you can use stream_select() to acheive this (see docs for socket_select; they work the same way, but on different things). Also, you should use if ($string !== false) to 100% correct in your script. Previous Comments: ------------------------------------------------------------------------ [2002-10-17 17:07:37] sniper@php.net Try this one again: http://snaps.php.net/php4-latest.tar.bz2 You might have got the snapshot which didn't have the fixes. ------------------------------------------------------------------------ [2002-10-17 12:52:36] ces@vaultbbs.com I just tried with the latest from snaps.php.net. Problem still exists as of php4-200210170600. ------------------------------------------------------------------------ [2002-10-17 02:15:13] wez@php.net This bug has been fixed in CVS. In case this was a PHP problem, snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. In case this was a documentation problem, the fix will show up soon at http://www.php.net/manual/. In case this was a PHP.net website problem, the change will show up on the PHP.net site and on the mirror sites in short time. Thank you for the report, and for helping us make PHP better. Use a snapshot from http://snaps.php.net/php4-latest.tar.bz2 fgets had some real nasty problems. ------------------------------------------------------------------------ [2002-10-16 23:32:19] ces@vaultbbs.com I am trying to use the CLI version of 4.3.0-pre1. My script needs to act if there hasn't been input within a certain amount of time. I've used the following function to accomplish this with TCP/IPsockets in non-blocking mode: function GetSocketLine($socket, $timeout) { $timeout += time(); $holdString = ""; while(time() < $timeout) { $string = fgets($socket, 1024); if($string != false) break; } return($string); } However, if I use set_stream_blocking() to set STDIN to non-blocking, the above code returns garbage instead of "false" when there is nothing to receive. It would seem to me that if STDIN is set to non-blocking and STDIN is passed to the above function as $socket, it ought to return "false" when blocking would occur--it shouldn't return garbage. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=19944&edit=1