composer require workerman/workerman v5.0.0-beta.7 revolt/event-loop ^1.0.0 workerman/http-client ^2.0.0

 public static function RequestPost(string $backUrl, array $data, Logger $log): void
    {
        $http = new \Workerman\Http\Client();
        $response = $http->request($backUrl, [
            'method' => 'POST',
            'version' => '1.1',
            'headers' => ['Content-Type' => 'application/json',],
            'data' => json_encode($data)
        ]);
        echo $response->getBody();
    }