Develop C/S structure with PHP_PHP tutorial

Server

// Server

// Set error handling

error_reporting (E_ALL);

//Set running time

set_time_limit (0);

// Enable buffering

ob_implicit_flush ();

$ip = "127.0.0.1 "; // IP address

$port = 1000; // Port number

$socket = socket_create (AF_INET, SOCK_STREAM, SOL_TCP); // Create a SOCKET

if ($socket)

echo "socket_create() successful!n";

else

echo "socket_create() failed:".socket_strerror ($socket)." n";

$bind = socket_bind ($socket, $ip, $port); // Bind a SOCKET

if ($bind)

echo "socket_bind () successful!n";

else

echo "socket_bind() failed:".socket_strerror ($bind)."n";

$listen = socket_listen ( $socket); // Listen to SOCKET

if ($listen)

echo "socket_listen() successful!n";

else

echo "socket_listen() failed:".socket_strerror ($listen)."n";

while (true)

{

$msg = socket_accept ($socket); //Accept a SOCKET

if (!$msg)

{

echo "socket_accept() failed:".socket_strerror ($msg)."n";

break;

}

$welcome = "Welcome to PHP Server!n";

socket_write ($msg, $welcome, strlen ($welcome ));

while (true)

{

$command = strtoupper (trim (socket_read ($msg, 1024)));

if (!$command)

break;

switch ($command)

{

case "HELLO":

$writer = "Hello Everybody!";

break;

case "QUIT":

$writer = "Bye-Bye";

break;

case "HELP":

$writer = "HELLOtQUITtHELP";

break;

default:

$writer = "Error Command!";

}

socket_write ($msg, $writer, strlen ($writer));

if ($command == "QUIT")

break;

}

socket_close ($msg);

}

socket_close ($socket); // Close SOCKET

?>

Client

// Client

// Set error handling

error_reporting (E_ALL);

//Set processing time

set_time_limit (0);

$ip = "127.0.0.1"; // IP address

$port = 1000; // Port number

$socket = socket_create (AF_INET, SOCK_STREAM, SOL_TCP); // Create a SOCKET

if ($socket)

echo "socket_create() successful!n";

else

echo "socket_create() failed:".socket_strerror ($socket)."n";

$conn = socket_connect ($socket, $ip, $port); // Establish a SOCKET connection

if ($conn)

echo "Success to connection![".$ip. ":".$port."]n";

else

echo "socket_connect() failed:".socket_strerror ($conn)."n";

echo socket_read ($socket, 1024);

$stdin = fopen (´php://stdin´, ´r´);

while (true)

{

$command = trim (fgets ($stdin, 1024));

socket_write ($socket, $command, strlen ($command));

$msg = trim (socket_read ($socket, 1024));

echo $msg."n";

if ($msg == "Bye-Bye")

break ;

}

fclose ($stdin);

socket_close ($socket);

?>

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