phpsocket连接，udp

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$server = 'udp://192.168.253.1:9998';
//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 : $peern";
	echo "Receive : {$inMsg}";
	//给客户端发送信息
	$outMsg = substr($inMsg, 0, (strrpos($inMsg, $msg_eof))).' -- '.date("D M j H:i:s Yrn");

	stream_socket_sendto($socket, $outMsg, 0, $peer);
	
} while ($inMsg !== false);

?>