<?php
// don't timeout
set_time_limit (0);
// set some variables
$host = "127.0.0.1";
$port = 1234;
// create socket
$socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create
socket\n");
// bind socket to port
$result = socket_bind($socket, $host, $port) or die("Could not bind to
socket\n");
// start listening for connections
$result = socket_listen($socket, 3) or die("Could not set up socket
listener\n");
echo "Waiting for connections...\n";
// accept incoming connections
// spawn another socket to handle communication
$spawn = socket_accept($socket) or die("Could not accept incoming
connection\n");
echo "Received connection request\n";
// write a welcome message to the client
$welcome = "Welcome to Thanatos RPG\n\rPlease input your username:";
socket_write($spawn, $welcome, strlen ($welcome)) or die("Could not send
connect string\n");
//function for writing to a socket; use send_telnet("information to send here");
function send_telnet($output){
socket_write($output, strlen ($output)) or die("Could not write output\n");
			echo "Sent output: " . trim($output) . "\n";
}
// keep looping and looking for client input
do
{
// read client input
$input = socket_read($spawn, 1024, 1) or die("Could not read input\n");
if (trim($input) != "")
	{
	echo "Received input: $input\n";
	// if client requests session end
	if (trim($input) == "END")
		{
		// close the child socket
		// break out of loop
		socket_close($spawn);
		break;
		}
	// otherwise...
	else
	{
	// get username
	if (trim($input) == "jack")
		{
		$output = "Welcome, Jack, to Thanatos RPG. Please input your password:";
		send_telnet($output) or die("Could
		not write output\n");
		echo "Sent output: " . trim($output) . "\n";
		}
	}
}
} while (true);
// close primary socket
socket_close($socket);
echo "Socket terminated\n";
?>