$loop = \React\EventLoop\Factory::create();

$makeConnection = function () {
    return mysqli_connect('localhost', 'vagrant', '', 'test');
};

$mysql = new \React\MySQLi\Client($loop, new \React\MySQLi\Pool($makeConnection, 10));

$mysql->query('select * from test')->then(
    function (\React\MySQLi\Result $result) {
        print_r($result->all());
    },
    function ($error) {
        error_log($error);
    }
);

$loop->run();