PHP的Socket通信之UDP通信实例

//服务器信息 $server = 'udp://127.0.0.1:9998'; //消息结束符号 $msg_eof = "/n"; $socket = stream_socket_server($server, $errno, $errstr, STREAM_SERVER_BIND); if (!$socket) {   die("$errstr ($errno)"); } do {   //接收客户端发来的信息   $inMsg = stream_socket_recvfrom($socket, 1024, 0, $peer);   //服务端打印出相关信息   echo "Client : $peer/n";   echo "Receive : {$inMsg}";   //给客户端发送信息   $outMsg = substr($inMsg, 0, (strrpos($inMsg, $msg_eof))).' -- '.date("D M j H:i:s Y/r/n");   stream_socket_sendto($socket, $outMsg, 0, $peer); } while ($inMsg !== false);

function udpGet($sendMsg = '', $ip = '127.0.0.1', $port = '9998'){   $handle = stream_socket_client("udp://{$ip}:{$port}", $errno, $errstr);   if( !$handle ){     die("ERROR: {$errno} - {$errstr}/n");   }   fwrite($handle, $sendMsg."/n");   $result = fread($handle, 1024);   fclose($handle);   return $result; } $result = udpGet('Hello World'); echo $result;