UDP communication instance of PHP socket communication

This article illustrates the UDP communication method of PHP socket communication. Share to everyone for your reference. as follows:

1. Create a simple UDP server

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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 {

Receiving information from the client

$INMSG = Stream_socket_recvfrom ($socket, 1024, 0, $peer);

The service side prints out the relevant information

echo "Client: $peern";

echo "Receive: {$INMSG}";

Sending information to clients

$OUTMSG = substr ($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

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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 help you with your PHP program design.