note 101012 added to function.socket-create

Here is a ping function for PHP without using exec/system/passthrough/etc... Very useful to use to just test if a host is online before attempting to connect to it. Timeout is in seconds. <?PHP function ping($host, $timeout = 1) { /* ICMP ping packet with a pre-calculated checksum */ $package = "\x08\x00\x7d\x4b\x00\x00\x00\x00PingHost"; $socket = socket_create(AF_INET, SOCK_RAW, 1); socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array('sec' => $timeout, 'usec' => 0)); socket_connect($socket, $host, null); $ts = microtime(true); socket_send($socket, $package, strLen($package), 0); if (socket_read($socket, 255)) $result = microtime(true) - $ts; else $result = false; socket_close($socket); return $result; } ?> ---- Server IP: 69.147.83.197 Probable Submitter: 60.242.104.244 ---- Manual Page -- http://www.php.net/manual/en/function.socket-create.php Edit -- https://master.php.net/note/edit/101012 Del: integrated -- https://master.php.net/note/delete/101012/integrated Del: useless -- https://master.php.net/note/delete/101012/useless Del: bad code -- https://master.php.net/note/delete/101012/bad+code Del: spam -- https://master.php.net/note/delete/101012/spam Del: non-english -- https://master.php.net/note/delete/101012/non-english Del: in docs -- https://master.php.net/note/delete/101012/in+docs Del: other reasons-- https://master.php.net/note/delete/101012 Reject -- https://master.php.net/note/reject/101012 Search -- https://master.php.net/manage/user-notes.php