Question

I’m implementing a socket server to an unknown number of clients, I found on internet alot of examples where a max number of clients was passed to socket_listen method, but I don’t know what could be my number of clients.

If I call socket_listen($sock) without a number of $backlog, it will work for a multiple clients server?

Thanks.

Answer 1

You can do this natively – but for this 0MQ is the answer – see the chat example from Ian’s excellent talk

e.g. Server.php:

$ctx = new ZMQContext();
$pub = $ctx->getSocket(ZMQ::SOCKET_PUB);
$pub->bind('tcp://*:5566');
$pull = $ctx->getSocket(ZMQ::SOCKET_PULL);
$pull->bind('tcp://*:5567');

while(true) {
    $message = $pull->recv();
    echo "Got ", $message, PHP_EOL;
    $pub->send($message);
}