PHP Socket communication UDP communication example_PHP tutorial

UDP communication example of PHP's Socket communication

This article describes the UDP communication method of PHP's Socket communication. Share it with everyone for your reference. The details are as follows:

1. Create a simple UDP server

　?

　18//Server information

　$server = 'udp://127.0.0.1:9998';

//Message end symbol

　$msg_eof = "n";

$socket = stream_socket_server($server, $errno, $errstr, STREAM_SERVER_BIND);

　if (!$socket) {

die("$errstr ($errno)");

　}

do {

//Receive information from the client

　$inMsg = stream_socket_recvfrom($socket, 1024, 0, $peer);

//The server prints out relevant information

echo "Client : $peern";

echo "Receive : {$inMsg}";

//Send information to the client

　$outMsg = substr($inMsg, 0, (strrpos($inMsg, $msg_eof))).' -- '.date("D M j H:i:s Yrn");

Stream_socket_sendto($socket, $outMsg, 0, $peer);

　} while ($inMsg !== false);

　2. Simple client

　?

　12function 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;

I hope this article will be helpful to everyone’s PHP programming design.