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php 实现 tcp

2026-01-29 20:20:48PHP

PHP 实现 TCP 通信的方法

使用 socket 扩展

PHP 的 socket 扩展提供了 TCP 通信的功能。以下是一个简单的 TCP 服务器和客户端的实现示例。

TCP 服务器示例

$host = '127.0.0.1';
$port = 12345;

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_bind($socket, $host, $port);
socket_listen($socket);

echo "Server listening on $host:$port\n";

while (true) {
    $client = socket_accept($socket);
    $message = socket_read($client, 1024);
    echo "Received: $message\n";
    socket_write($client, "Message received", strlen("Message received"));
    socket_close($client);
}

socket_close($socket);

TCP 客户端示例

$host = '127.0.0.1';
$port = 12345;

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_connect($socket, $host, $port);

$message = "Hello, Server!";
socket_write($socket, $message, strlen($message));
$response = socket_read($socket, 1024);
echo "Server response: $response\n";

socket_close($socket);

使用 stream_socket 函数

PHP 的 stream_socket 函数族也支持 TCP 通信，提供了更高层次的抽象。

TCP 服务器示例

$host = '127.0.0.1';
$port = 12345;

$server = stream_socket_server("tcp://$host:$port", $errno, $errstr);
if (!$server) {
    die("Error: $errstr ($errno)");
}

echo "Server listening on $host:$port\n";

while ($client = stream_socket_accept($server)) {
    $message = fread($client, 1024);
    echo "Received: $message\n";
    fwrite($client, "Message received");
    fclose($client);
}

fclose($server);

TCP 客户端示例

$host = '127.0.0.1';
$port = 12345;

$client = stream_socket_client("tcp://$host:$port", $errno, $errstr);
if (!$client) {
    die("Error: $errstr ($errno)");
}

$message = "Hello, Server!";
fwrite($client, $message);
$response = fread($client, 1024);
echo "Server response: $response\n";

fclose($client);

使用第三方库

对于更复杂的 TCP 通信需求，可以考虑使用第三方库，如 ReactPHP 或 Workerman。这些库提供了事件驱动的异步 TCP 通信能力。

ReactPHP 示例

require 'vendor/autoload.php';

$loop = React\EventLoop\Factory::create();
$socket = new React\Socket\Server('127.0.0.1:12345', $loop);

$socket->on('connection', function (React\Socket\ConnectionInterface $connection) {
    $connection->write("Hello from server!\n");
    $connection->on('data', function ($data) use ($connection) {
        echo "Received: $data";
        $connection->write("Message received\n");
    });
});

echo "Server listening on 127.0.0.1:12345\n";
$loop->run();

Workerman 示例

php 实现 tcp

require_once 'vendor/autoload.php';

use Workerman\Worker;

$worker = new Worker('tcp://127.0.0.1:12345');
$worker->onConnect = function($connection) {
    echo "New connection\n";
};
$worker->onMessage = function($connection, $data) {
    echo "Received: $data\n";
    $connection->send("Message received\n");
};
$worker->onClose = function($connection) {
    echo "Connection closed\n";
};

Worker::runAll();