小编Ula*_*ava的帖子

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geting error sizeof():参数必须是实现Countable的数组或对象

ErrorException {#654 ?
  #message: "sizeof(): Parameter must be an array or an object that implements Countable"
  #code: 0
  #file: "C:\Primer_Proyecto\Ventas\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php"
  #line: 179
  #severity: E_WARNING
  trace: {?
    C:\Primer_Proyecto\Ventas\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php:179 {?}
    Illuminate\Foundation\Bootstrap\HandleExceptions->handleError() {}
    C:\Primer_Proyecto\Ventas\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php:179 {?}
    C:\Primer_Proyecto\Ventas\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php:281 {?}
    C:\Primer_Proyecto\Ventas\vendor\paypal\rest-api-sdk-php\lib\PayPal\Common\PayPalModel.php:296 {?}
    C:\Primer_Proyecto\Ventas\vendor\paypal\rest-api-sdk-php\lib\PayPal\Api\Payment.php:557 {?}
    C:\Primer_Proyecto\Ventas\app\paypal.php:26 {?
      › try{\r
      › \t$payment->create($this->_apiContext);\r
      › }\r
      arguments: {?}
    }

这是paypal.php代码

public function generate(){
    $payment = \PaypalPayment::payment()->setIntent("sale")
        ->setPayer($this->payer())
        ->setTransactions([$this->transaction()])
        ->setRedirectURLs($this->redirectURLs());

    try {
        $payment->create($this->_apiContext);
    }
    catch(\Exception $ex){
        dd($ex);
        exit(1);
    }

    return $payment;
}


public function __construct($shopping_cart){
    $this->_apiContext = …