当我尝试在沙盒(ENV_SANDBOX)模式下测试应用程序时,在模拟器和设备中都出现了以下错误:Posting Error: 2147483647DEVELOPER ERROR: This app not using a supported version of the PayPal library.
data back to PayPal to validate the IPN data is genuine $paypal_url = "https://www.paypal.com/cgi-bin/webscr";$ch = curl_init($paypal_url);
if ($ch"