PHP 5.6.0 released

Exemplos

Exemplo #1 Exemplo de socket: Simples servidor TCP/IP

Este exemplo mostra uma simples troca de informações do servidor. Alterar as variáveis address e port para o conjunto da sua configuração e execução. Você deve então conectar o servidor com uma linha de comando similiar a: telnet 192.168.1.53 10000 (onde o endereço e a porta partem da sua configuração). Algo que você digitar então irá sair no lado do servidor, e mostrar isso para você. Para desconectar, digite 'quit'.

#!/usr/local/bin/php -q
<?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_INETSOCK_STREAMSOL_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($sock5) === false) {
    echo 
"socket_listen() failed: reason: " socket_strerror(socket_last_error($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($msgsock$msgstrlen($msg));

    do {
        if (
false === ($buf socket_read($msgsock2048PHP_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($msgsock$talkbackstrlen($talkback));
        echo 
"$buf\n";
    } while (
true);
    
socket_close($msgsock);
} while (
true);

socket_close($sock);
?>

Exemplo #2 Exemplo de Socket: Simples cliente TCP/IP

Este exemplo mostra um simples, one-shot cliente HTTP. Isso simplesmente conecta à uma página, envia um cabeçalho de requisição, mostra a resposta, e sai.

<?php
error_reporting
(E_ALL);

echo 
"<h2>TCP/IP Connection</h2>\n";

/* Get the port for the WWW service. */
$service_port getservbyname('www''tcp');

/* Get the IP address for the target host. */
$address gethostbyname('www.example.com');

/* Create a TCP/IP socket. */
$socket socket_create(AF_INETSOCK_STREAMSOL_TCP);
if (
$socket === false) {
    echo 
"socket_create() failed: reason: " socket_strerror(socket_last_error()) . "\n";
} else {
    echo 
"OK.\n";
}

echo 
"Attempting to connect to '$address' on port '$service_port'...";
$result socket_connect($socket$address$service_port);
if (
$result === false) {
    echo 
"socket_connect() failed.\nReason: ($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 .= "Connection: Close\r\n\r\n";
$out '';

echo 
"Sending HTTP HEAD request...";
socket_write($socket$instrlen($in));
echo 
"OK.\n";

echo 
"Reading response:\n\n";
while (
$out socket_read($socket2048)) {
    echo 
$out;
}

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

add a note add a note

User Contributed Notes 3 notes

up
19
javier,javiern at gmail dot com
2 years ago
You can easily extend the first example to handle any number of connections instead of jsut one

#!/usr/bin/env php
<?php
error_reporting
(E_ALL);

/* Permitir al script esperar para conexiones. */
set_time_limit(0);

/* Activar el volcado de salida implícito, así veremos lo que estamo obteniendo
* mientras llega. */
ob_implicit_flush();

$address = '127.0.0.1';
$port = 10000;

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

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

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

//clients array
$clients = array();

do {
   
$read = array();
   
$read[] = $sock;
   
   
$read = array_merge($read,$clients);
   
   
// Set up a blocking call to socket_select
   
if(socket_select($read,$write = NULL, $except = NULL, $tv_sec = 5) < 1)
    {
       
//    SocketServer::debug("Problem blocking socket_select?");
       
continue;
    }
   
   
// Handle new Connections
   
if (in_array($sock, $read)) {       
       
        if ((
$msgsock = socket_accept($sock)) === false) {
            echo
"socket_accept() falló: razón: " . socket_strerror(socket_last_error($sock)) . "\n";
            break;
        }
       
$clients[] = $msgsock;
       
$key = array_keys($clients, $msgsock);
       
/* Enviar instrucciones. */
       
$msg = "\nBienvenido al Servidor De Prueba de PHP. \n" .
       
"Usted es el cliente numero: {$key[0]}\n" .
       
"Para salir, escriba 'quit'. Para cerrar el servidor escriba 'shutdown'.\n";
       
socket_write($msgsock, $msg, strlen($msg));
       
    }
   
   
// Handle Input
   
foreach ($clients as $key => $client) { // for each client       
       
if (in_array($client, $read)) {
            if (
false === ($buf = socket_read($client, 2048, PHP_NORMAL_READ))) {
                echo
"socket_read() falló: razón: " . socket_strerror(socket_last_error($client)) . "\n";
                break
2;
            }
            if (!
$buf = trim($buf)) {
                continue;
            }
            if (
$buf == 'quit') {
                unset(
$clients[$key]);
               
socket_close($client);
                break;
            }
            if (
$buf == 'shutdown') {
               
socket_close($client);
                break
2;
            }
           
$talkback = "Cliente {$key}: Usted dijo '$buf'.\n";
           
socket_write($client, $talkback, strlen($talkback));
            echo
"$buf\n";
        }
       
    }       
} while (
true);

socket_close($sock);
?>
up
-6
Anonymous
4 months ago
A more object oriented example of the server

#!/usr/bin/env php
<?php

class MySocketServer
{
    protected
$socket;
    protected
$clients = [];
    protected
$changed;
   
    function
__construct($host = 'localhost', $port = 9000)
    {
       
set_time_limit(0);
       
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
       
socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1);

       
//bind socket to specified host
       
socket_bind($socket, 0, $port);
       
//listen to port
       
socket_listen($socket);
       
$this->socket = $socket;
    }
   
    function
__destruct()
    {
        foreach(
$this->clients as $client) {
           
socket_close($client);
        }
       
socket_close($this->socket);
    }
   
    function
run()
    {
        while(
true) {
           
$this->waitForChange();
           
$this->checkNewClients();
           
$this->checkMessageRecieved();
           
$this->checkDisconnect();
        }
    }
   
    function
checkDisconnect()
    {
        foreach (
$this->changed as $changed_socket) {
           
$buf = @socket_read($changed_socket, 1024, PHP_NORMAL_READ);
            if (
$buf !== false) { // check disconnected client
               
continue;
            }
           
// remove client for $clients array
           
$found_socket = array_search($changed_socket, $this->clients);
           
socket_getpeername($changed_socket, $ip);
            unset(
$this->clients[$found_socket]);
           
$response = 'client ' . $ip . ' has disconnected';
           
$this->sendMessage($response);
        }
    }
   
    function
checkMessageRecieved()
    {
        foreach (
$this->changed as $key => $socket) {
           
$buffer = null;
            while(
socket_recv($socket, $buffer, 1024, 0) >= 1) {
               
$this->sendMessage(trim($buffer) . PHP_EOL);
                unset(
$this->changed[$key]);
                break;
            }
        }
    }
   
    function
waitForChange()
    {
       
//reset changed
       
$this->changed = array_merge([$this->socket], $this->clients);
       
//variable call time pass by reference req of socket_select
       
$null = null;
       
//this next part is blocking so that we dont run away with cpu
       
socket_select($this->changed, $null, $null, null);
    }
   
    function
checkNewClients()
    {
        if (!
in_array($this->socket, $this->changed)) {
            return;
//no new clients
       
}
       
$socket_new = socket_accept($this->socket); //accept new socket
       
$first_line = socket_read($socket_new, 1024);
       
$this->sendMessage('a new client has connected' . PHP_EOL);
       
$this->sendMessage('the new client says ' . trim($first_line) . PHP_EOL);
       
$this->clients[] = $socket_new;
        unset(
$this->changed[0]);
    }
   
   
    function
sendMessage($msg)
    {
        foreach(
$this->clients as $client)
        {
            @
socket_write($client,$msg,strlen($msg));
        }
        return
true;
    }
}

(new
MySocketServer())->run();
?>
up
-31
Anonymous
11 months ago
The variable $in in TCP client exampe really needs to end with '\n' or otherwise it doesn't fire the read event in the server side (at least in my Delphi program).
To Top