问如何获取websiteA的客户端ip和浏览器信息，并将这些信息保存在其他服务器数据库中？(使用PHP)

EN

$ip = $_SERVER[‘REMOTE_ADDR’];

$agent =  $_SERVER['HTTP_USER_AGENT'];

$datetime = date("Y-m-d h:i:sa", $d);

<?php
$ip = $_SERVER[‘REMOTE_ADDR’];
$agent =  $_SERVER['HTTP_USER_AGENT'];
$datetime = date("Y-m-d h:i:sa", $d);

$dbh = new mysqli("remote-server-ip", "my_user", "my_password", "database-name");

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$stmt = $dbh->prepare("INSERT INTO TABLENAME (date, ip, useragent) VALUES (?, ?, ?)");
$stmt->bindParam(1, $datetime);
$stmt->bindParam(2, $ip);
$stmt->bindParam(2, $agent);

$stmt->execute();
$stmt->close();

/* close connection */
$mysqli->close();
?>