PHP with sockets [closed]

Simple TCP / IP Server

This example shows a simple exchange of server information. Change the address and port variables for the set of your configuration and execution. You should then connect the server with a command line similar to: telnet 192.168.1.53 10000 (where the address and port start from your configuration). Something you type will then go out on the server side, and show this to you. To disconnect, type 'quit'.

#!/usr/local/bin/php -q
<?php
error_reporting(E_ALL);

/* Permite que o script fique por aí esperando conexões. */
set_time_limit(0);

/* Ativa o fluxo de saída implícito para ver o que estamos recebendo à medida que ele vem. */
ob_implicit_flush();

$address = '192.168.1.53';
$port = 10000;

if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
    echo "socket_create() falhou: razao: " . socket_strerror(socket_last_error()) . "\n";
}

if (socket_bind($sock, $address, $port) === false) {
    echo "socket_bind() falhou: razao: " . socket_strerror(socket_last_error($sock)) . "\n";
}

if (socket_listen($sock, 5) === false) {
    echo "socket_listen() falhou: razao: " . socket_strerror(socket_last_error($sock)) . "\n";
}

do {
    if (($msgsock = socket_accept($sock)) === false) {
        echo "socket_accept() falhou: razao: " . socket_strerror(socket_last_error($sock)) . "\n";
        break;
    }
    /* Envia instruções. */
    $msg = "\nBem-vindo ao PHP Test Server. \n" .
        "Para sair, digite 'quit'. Para desligar digite 'shutdown'.\n";
    socket_write($msgsock, $msg, strlen($msg));

    do {
        if (false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
            echo "socket_read() falhou: razao: " . socket_strerror(socket_last_error($msgsock)) . "\n";
            break 2;
        }
        if (!$buf = trim($buf)) {
            continue;
        }
        if ($buf == 'quit') {
            break;
        }
        if ($buf == 'shutdown') {
            socket_close($msgsock);
            break 2;
        }
        $talkback = "PHP: Você disse: '$buf'.\n";
        socket_write($msgsock, $talkback, strlen($talkback));
        echo "$buf\n";
    } while (true);
    socket_close($msgsock);
} while (true);

socket_close($sock);
?>

Simple TCP / IP client

This example shows a simple, one-shot HTTP client. This simply connects to a page, sends a request header, shows the response, and exits.

<?php
error_reporting(E_ALL);

echo "<h2>Conexão TCP/IP</h2>\n";

/* Obtem a porta para o serviço WWW. */
$service_port = getservbyname('www', 'tcp');

/* Obtem o endereço IP para o host alvo. */
$address = gethostbyname('www.example.com');

/* Cria o socket TCP/IP  */
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) {
    echo "socket_create() falhou: razao: " . socket_strerror(socket_last_error()) . "\n";
} else {
    echo "OK.\n";
}

echo "Tentando se conectar a '$address' na porta '$service_port'...";
$result = socket_connect($socket, $address, $service_port);
if ($result === false) {
    echo "socket_connect() falhou.\nRazao: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";
} else {
    echo "OK.\n";
}

$in = "HEAD / HTTP/1.1\r\n";
$in .= "Host: www.example.com\r\n";
$in .= "Conexão: Fechar\r\n\r\n";
$out = '';

echo "Enviando solicitação HEAD HTTP...";
socket_write($socket, $in, strlen($in));
echo "OK.\n";

echo "Resposta de leitura:\n\n";
while ($out = socket_read($socket, 2048)) {
    echo $out;
}

echo "Fechando socket...";
socket_close($socket);
echo "OK.\n\n";
?>

  

Read more about sockets:

     

Documentation - SOCKETS