如果我从这里开始，我应该做什么？要进入前端的贝宝覆盖？（有一些预填充的值。像这样的https://websolutionstuff.com/adminTheme/assets/img/pay.png）这就是我现在想要的。
$environment = new SandboxEnvironment($clientId, $clientSecret);
$client = new PayPalHttpClient($environment);
$request = new OrdersCreateRequest();
$request->prefer('return=representation');
$request->body = [
"intent" => "CAPTURE",
"purchase_units" => [[
"reference_id" => "test_ref_id1",
"amount" => [
"value" => "100.00",
"currency_code" => "USD",
],
]],
"application_context" => [
"cancel_url" => "https://example.com/cancel",
"return_url" => "https://example.com/return",
],
];
try {
$response = $client->execute($request);
print_r($response);
} catch (HttpException $ex) {
echo $ex->statusCode;
print_r($ex->getMessage());
}
}