PHP Socket server performance

[bnashenas1984]

Hi everyone
I really need some help with my socket server code.
I'm using this code for gaming purpose which more than 20,000 users might be connected to at once.

I know that the code works fine right now with 4 or 5 users connected for testing. But what happens when 30,000 players are connected? Will it still work or does it get slow or crash?

I know this could be done with many other languages but right now I need it in PHP.

Thanks

<?php
error_reporting(E_ALL);
set_time_limit(0);

ob_implicit_flush();

$address = '192.168.56.1';
$port = 1234;

function send_Message($listOfClients, $buf){
	if (is_array($listOfClients)){
		foreach($listOfClients as $currentClient){
			socket_write($currentClient, $buf);
		}
	} else {
		socket_write($listOfClients, $buf.chr(0));
	}
}

if (($master = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) {die ("socket_create() failed, reason: " . socket_strerror($master) . "\n");}

socket_set_option($master, SOL_SOCKET,SO_REUSEADDR, 1);

if (($ret = socket_bind($master, $address, $port)) < 0){die("socket_bind() failed, reason: " . socket_strerror($ret) . "\n");}

if (($ret = socket_listen($master, 5)) < 0){
    die("socket_listen() failed, reason: " . socket_strerror($ret) . "\n");
} else {
	echo 'Server Running...';
}



$read_sockets = array($master);

while (true) {
   $changed_sockets = $read_sockets;
   
   $num_changed_sockets = socket_select($changed_sockets, $write = NULL, $except = NULL, 5);
	
   foreach($changed_sockets as $socket) {
       if ($socket == $master) {
           if (($client = socket_accept($master)) < 0){
               //echo "socket_accept() failed: reason: " . socket_strerror($msgsock) . "\n";
               continue;
           } else {
              array_push($read_sockets, $client);
			  send_Message($client, $client); 
           }
       } else {
           $bytes = socket_recv($socket, $buffer, 2048, 0);

           if ($bytes == 0){
               $index = array_search($socket, $read_sockets);
               unset($read_sockets[$index]);
               socket_close($socket);
           } else {
			   	$allclients = $read_sockets;
				array_shift($allclients);
				send_Message($allclients, $buffer.chr(0));
				if (trim($buffer) == 'exit'){socket_close($master); die('<br>Server stoped!!!');}
			}
   
       }
   }
   
}
?>

[bnashenas1984]

Anybody? Any suggestions will be highly appreciated...