我必须在php中发送两个关于和product的变量到另一个页面

$product_name = "iPhone";
$product_price = 999.99;

$url = "http://example.com/another_page.php";
$url .= "?product_name=" . urlencode($product_name);
$url .= "&product_price=" . urlencode($product_price);
header("Location: " . $url);
exit();

$url = "http://example.com/another_page.php";
$data = array(
    'product_name' => $product_name,
    'product_price' => $product_price
);
$options = array(
    'http' => array(
        'method' => 'POST',
        'header' => 'Content-type: application/x-www-form-urlencoded',
        'content' => http_build_query($data)
    )
);
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);

$product_name = $_GET['product_name'];
$product_price = $_GET['product_price'];

// 进行相应的处理

$product_name = $_POST['product_name'];
$product_price = $_POST['product_price'];

// 进行相应的处理