note 60438 added to function.socket-create

Here's a ping function that uses sockets instead of exec(). Note: I was unable to get socket_create() to work without running from CLI as root. I've already calculated the package's checksum to simplify the code (the message is 'ping' but it doesn't actually matter). <?php function ping($host) { $package = "\x08\x00\x19\x2f\x00\x00\x00\x00\x70\x69\x6e\x67"; /* create the socket, the last '1' denotes ICMP */ $socket = socket_create(AF_INET, SOCK_RAW, 1); /* set socket receive timeout to 1 second */ socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array("sec" => 1, "usec" => 0)); /* connect to socket */ socket_connect($socket, $host, null); /* record start time */ list($start_usec, $start_sec) = explode(" ", microtime()); $start_time = ((float) $start_usec + (float) $start_sec); socket_send($socket, $package, strlen($package), 0); if(@socket_read($socket, 255)) { list($end_usec, $end_sec) = explode(" ", microtime()); $end_time = ((float) $end_usec + (float) $end_sec); $total_time = $end_time - $start_time; return $total_time; } else { return false; } socket_close($socket); } ?> ---- Manual Page -- http://www.php.net/manual/en/function.socket-create.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+60438 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+60438&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+60438&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+60438&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+60438&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+60438&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+60438&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+60438&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+60438&report=yes Search -- http://master.php.net/manage/user-notes.php