note 47182 added to function.socket-recv

I've used socket_select and socket_recv with a while loop and found myself in trouble when remote side closed connection. The code below produced infinite loop and socket_select returned immediately (which lead to high cpu time consumption). <? socket_set_nonblock($my_socket); $streams = array($my_socket/*, ... */); $lastAccess = time(); while (socket_select($streams, $write = NULL, $except = NULL, SLEEP_TIME_SECONDS, SLEEP_TIME_MILLISECONDS) !== FALSE) { if (in_array($my_socket, $streams)) { while (@socket_recv($my_socket, $data, 8192, 0)) { echo $data; } $lastAccess = time(); } else { if (time()-$lastAccess > LAST_ACCESS_TIMEOUT) { break; } } // ... $streams = array($my_socket/*, ... */); } ?> The solution was simple, but quite hard to find because socket_recv is not documented. socket_recv returns FALSE if there is no data and 0 if the socket is widowed (disconnected by remote side). So I had just to check return value of socket_recv. The problem now sounds stupid, but I've spend some time to find it out. I hope this will save some of somebody's hair ;) ---- Manual Page -- http://www.php.net/manual/en/function.socket-recv.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+47182 Delete -- http://master.php.net/manage/user-notes.php?action=delete+47182&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+47182&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+47182&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+47182&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+47182&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+47182&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+47182&report=yes Search -- http://master.php.net/manage/user-notes.php