Fatal error: Uncaught Exception: PagSeguroLibrary: cURL library is required. in C:\Apache24\htdocs\library\Zend\PagSeguro\source\PagSeguroLibrary\utils\PagSeguroHttpConnection.class.php:36 Stack trace: #0 C:\Apache24\htdocs\library\Zend\PagSeguro\source\PagSeguroLibrary\service\PagSeguroPreApprovalService.class.php(158): PagSeguroHttpConnection->__construct() #1 C:\Apache24\htdocs\library\Zend\PagSeguro\source\PagSeguroLibrary\domain\PagSeguroPreApprovalCharge.class.php(144): PagSeguroPreApprovalService::paymentCharge(Object(PagSeguroAccountCredentials), Object(PagSeguroPreApprovalCharge)) #2 C:\Apache24\htdocs\library\Zend\PagSeguro\source\examples\preapproval\chargePreApproval.php(56): PagSeguroPreApprovalCharge->register(Object(PagSeguroAccountCredentials)) #3 C:\Apache24\htdocs\library\Zend\PagSeguro\source\examples\preapproval\chargePreApproval.php(78): ChargePreApproval::main() #4 {main} thrown in C:\Apache24\htdocs\library\Zend\PagSeguro\source\PagSeguroLibrary\utils\PagSeguroHttpConnection.class.php on line 36