Connexion à un serveur TCP/IP via le script php

Question

je dois mettre en œuvre un script php sur mon site qui procédez comme suit:

1. Se connecter à un serveur distant
2. Envoyer paquet au serveur
3. paquet de réception du serveur

Tout est déjà configuré sur le côté serveur pour répondre aux demandes de paquets, je ne ai besoin de savoir comment utiliser PHP pour se connecter au serveur TCP/IP.

Des idées dans quelle direction regarder?

Answer 1

facilement avec les sockets PHP:

<?php 
$fp = fsockopen("www.example.com", 80, $errno, $errstr, 30); 
if (!$fp) { 
    echo "$errstr ($errno)<br />\n"; 
} else { 
    fwrite($fp, "You message"); 
    while (!feof($fp)) { 
     echo fgets($fp, 128); 
    } 
    fclose($fp); 
} 
?> 

Lire la suite - http://php.net/manual/en/function.fsockopen.php programmation socket

Answer 2

<?php 
error_reporting(E_ALL); 

/* Allow the script to hang around waiting for connections. */ 
set_time_limit(0); 

/* Turn on implicit output flushing so we see what we're getting 
* as it comes in. */ 
ob_implicit_flush(); 

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

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

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

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

do { 
    if (($msgsock = socket_accept($sock)) === false) { 
     echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; 
     break; 
    } 
    /* Send instructions. */ 
    $msg = "\nWelcome to the PHP Test Server. \n" . 
     "To quit, type 'quit'. To shut down the server type 'shutdown'.\n"; 
    socket_write($msgsock, $msg, strlen($msg)); 

    do { 
     if (false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) { 
      echo "socket_read() failed: reason: " . 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; 
     } 
     $talkback = "PHP: You said '$buf'.\n"; 
     socket_write($msgsock, $talkback, strlen($talkback)); 
     echo "$buf\n"; 
    } while (true); 
    socket_close($msgsock); 
} while (true); 

socket_close($sock); 
?> 

this is just an example from net for further look documentation

connexion au serveur TCP

$host="192.168.1.99"; 
    $port = 1234; // open a client connection 
    $fp = fsockopen ($host, $port, $errno, $errstr); 
    if (!$fp) { 
    $result = "Error: could not open socket connection"; 
    } 
    else { // get the welcome message fgets ($fp, 1024); // write the user string to the socket 
    fputs($fp, $message); // get the result $result .= fgets ($fp, 1024); // close the connection 
    fputs ($fp, "END"); 
    fclose ($fp); // trim the result and remove the starting ? 
    $result = trim($result); 
    $result = substr($result, 2); // now print it to the browser 
    } ?> 
    Server said: <? echo $result; ?>