Php/docs/sockets.examples
范例
Example #1 Socket举例：简单的TCP/IP服务器
这个例子展示了一个简单的对讲服务器。改变地址和端口以满足你的设置和执行。
你可以使用类似于这样的命令：telnet 192.168.1.53 10000连接到服务器，（这里是你设置的地址和端口）。
你输入任何东西都会在服务器端输出来，然后回显给你。断开连接，请输入'quit'。
#!/usr/local/bin/php -q<?phperror_reporting(E_ALL);/* Allow the script to hang around waiting for connections. */set_time_limit(0);/* Turn on implicit output flushing so we see what we're getting * as it comes in. */ob_implicit_flush();$address = '192.168.1.53';$port = 10000;if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) { echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";}if (socket_bind($sock, $address, $port) === false) { echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";}if (socket_listen($sock, 5) === false) { echo "socket_listen() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";}do { if (($msgsock = socket_accept($sock)) === false) { echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; break; } /* Send instructions. */ $msg = "\nWelcome to the PHP Test Server. \n" . "To quit, type 'quit'. To shut down the server type 'shutdown'.\n"; socket_write($msgsock, $msg, strlen($msg)); do { if (false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) { echo "socket_read() failed: reason: " . socket_strerror(socket_last_error($msgsock)) . "\n"; break 2; } if (!$buf = trim($buf)) { continue; } if ($buf == 'quit') { break; } if ($buf == 'shutdown') { socket_close($msgsock); break 2; } $talkback = "PHP: You said '$buf'.\n"; socket_write($msgsock, $talkback, strlen($talkback)); echo "$buf\n"; } while (true); socket_close($msgsock);} while (true);socket_close($sock);?>
Example #2 Socket举例：简单的TCP/IP客户端
这个例子展示了一个简单的，一次性的HTTP客户端。 它只是连接到一个页面，提交一个HEAD请求，输出回复，然后退出。
<?phperror_reporting(E_ALL);echo "<h2>TCP/IP Connection</h2>\n";/* Get the port for the WWW service. */$service_port = getservbyname('www', 'tcp');/* Get the IP address for the target host. */$address = gethostbyname('www.example.com');/* Create a TCP/IP socket. */$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);if ($socket === false) { echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";} else { echo "OK.\n";}echo "Attempting to connect to '$address' on port '$service_port'...";$result = socket_connect($socket, $address, $service_port);if ($result === false) { echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";} else { echo "OK.\n";}$in = "HEAD / HTTP/1.1\r\n";$in .= "Host: www.example.com\r\n";$in .= "Connection: Close\r\n\r\n";$out = ;echo "Sending HTTP HEAD request...";socket_write($socket, $in, strlen($in));echo "OK.\n";echo "Reading response:\n\n";while ($out = socket_read($socket, 2048)) { echo $out;}echo "Closing socket...";socket_close($socket);echo "OK.\n\n";?>
