Paypal API (NVP) TransactionSearch 给出错误 10004 - 开始日期无效

Question

好的，所以下面的代码给了我上面的错误“开始日期无效”。即使我从各种来源验证了它是有效且格式良好的开始日期。代码的 res 没有问题，因为它成功返回了正确的余额。我已经搜索过所有地方，但找不到解决方案。请帮忙。谢谢！

class Paypal
{
/**
 * API Version
 */
const VERSION = 51.0;

/**
 * List of valid API environments
 * @var array
 */
private $allowedEnvs = array(
    'beta-sandbox',
    'live',
    'sandbox'
);

/**
 * Config storage from constructor
 * @var array
 */
private $config = array();

/**
 * URL storage based on environment
 * @var string
 */
private $url;

/**
 * Build PayPal API request
 * 
 * @param string $username
 * @param string $password
 * @param string $signature
 * @param string $environment
 */
public function __construct($username, $password, $signature, $environment = 'live')
{
    if (!in_array($environment, $this->allowedEnvs)) {
    throw new Exception('Specified environment is not allowed.');
    }
    $this->config = array(
    'username'    => $username,
    'password'    => $password,
    'signature'   => $signature,
    'environment' => $environment
    );
}

/**
 * Make a request to the PayPal API
 * 
 * @param  string $method API method (e.g. GetBalance)
 * @param  array  $params Additional fields to send in the request (e.g. array('RETURNALLCURRENCIES' => 1))
 * @return array
 */
public function call($method, array $params = array())
{
    $fields = $this->encodeFields(array_merge(
    array(
        'METHOD'    => $method,
        'VERSION'   => self::VERSION,
        'USER'      => $this->config['username'],
        'PWD'       => $this->config['password'],
        'SIGNATURE' => $this->config['signature']
    ),
    $params
    ));

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $this->getUrl());
    curl_setopt($ch, CURLOPT_POST, count($fields));
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($fields));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $response = curl_exec($ch);
    if (!$response) {
    throw new Exception('Failed to contact PayPal API: ' . curl_error($ch) . ' (Error No. ' . curl_errno($ch) . ')');
    }
    curl_close($ch);
    parse_str($response, $result);
    return $this->decodeFields($result);
}

/**
 * Prepare fields for API
 * 
 * @param  array  $fields
 * @return array
 */
private function encodeFields(array $fields)
{
    return array_map('urlencode', $fields);
}

/**
 * Make response readable
 * 
 * @param  array  $fields
 * @return array
 */
private function decodeFields(array $fields)
{
    return array_map('urldecode', $fields);
}

/**
 * Get API url based on environment
 * 
 * @return string
 */
private function getUrl()
{
    if (is_null($this->url)) {
    switch ($this->config['environment']) {
        case 'sandbox':
        case 'beta-sandbox':
        $this->url = "https://api-3t.".$this->config['environment'].".paypal.com/nvp";
        break;
        default:
        $this->url = 'https://api-3t.paypal.com/nvp';
    }
    }
    return $this->url;
}
}
$paypal = new Paypal('xxxxxxxxxxxxxxxxxxxxxx', 'xxxxxxxxxxxxxxxxxx', 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx');



print_r($paypal->call('TransactionSearch', array("STARTDATE"=>"2016-02-24T00:00:00Z")));

Answer 1

我认为您对

$this->encodeFields()

（在

call()

内部）的调用导致您的参数值变为双

urlencode()

。

$this->encodeFields()

正在对

urlencode()

数组中的每个元素调用

$fields

；但是，

http_build_query()

会自动为您完成此操作。因此，您在致电 PayPal 时可能会得到

STARTDATE=2016-02-24T00%253A00%253A00Z

，而实际上应该是

STARTDATE=2016-02-24T00%3A00%3A00Z

。