如果用的是Ｗorker，代碼類似下面

$http_worker = new Worker('http://0.0.0.0:80');
$http_worker->onMessage = function($http_connection, $data)
{
    $remote_connection = new AsynTcpConnection('xxx://x.x.x.x:xx');
    $remote_connection->send('xxx');
    // 把http_connection保存到$remote_connection一個屬性里面，屬性名隨意，這里叫httpConnection
    $remote_connection->httpConnection = $http_connection;
    $remote_connection->onMessage = function($remote_connection, $data)
    {
        // 通過remote_connection獲得對應(yīng)的http_connection，向瀏覽器發(fā)送數(shù)據(jù)
        $remote_connection->httpConnection->send('xxxx');
        // 關(guān)閉不用的鏈接，避免內(nèi)存泄露
        $remote_connection->httpConnection = null;
        $remote_connection->close();
    };
    $remote_connection->connect();
};

這個是個可運行的例子，你看下

require_once __DIR__.'/Workerman/Autoloader.php';
use Workerman\Worker;
use Workerman\Connection\AsyncTcpConnection;

$http_worker = new Worker('http://0.0.0.0:1234');
$http_worker->onMessage = function($http_connection, $data)
{
    $remote_connection = new AsyncTcpConnection('tcp://baidu.com:80');
    $remote_connection->send("GET / HTTP/1.1\r\nHost: baidu.com\r\nConnection: Close\r\nCache-Control: max-age=0\r\nAccept: text/html\r\n\r\n");
    // 把http_connection保存到$remote_connection一個屬性里面，屬性名隨意，這里叫httpConnection
    $remote_connection->httpConnection = $http_connection;
    $remote_connection->onMessage = function($remote_connection, $data)
    {
        // 通過remote_connection獲得對應(yīng)的http_connection，向瀏覽器發(fā)送數(shù)據(jù)
        $remote_connection->httpConnection->close(htmlspecialchars($data));
        // 關(guān)閉不用的鏈接，避免內(nèi)存泄露
        $remote_connection->httpConnection = null;
        $remote_connection->close();
    };
    $remote_connection->connect();
};

Worker::runAll();
}