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<?php |
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/* |
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* This file is part of the slince/youzan-pay package. |
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* |
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* (c) Slince <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Slince\YouzanPay; |
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use GuzzleHttp\Client; |
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use Slince\YouzanPay\Api\QRCode; |
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use Slince\YouzanPay\Api\Token; |
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use Slince\YouzanPay\Api\Trade; |
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class Requestor |
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{ |
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/** |
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* @var ApiContext |
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*/ |
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protected static $apiContext; |
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/** |
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* @var Client |
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*/ |
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protected static $httpClient; |
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/** |
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* @var Token |
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*/ |
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protected static $token; |
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/** |
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* 获取 access token. |
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* |
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* @var string |
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*/ |
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const GET_TOKEN_ENDPOINT = 'https://open.youzan.com/oauth/token'; |
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/** |
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* 创建支付二维码 |
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* |
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* @var string |
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*/ |
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const CREATE_QR_ENDPOINT = 'https://open.youzan.com/api/oauthentry/youzan.pay.qrcode/3.0.0/create'; |
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/** |
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* 获取支付二维码 |
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* |
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* @var string |
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*/ |
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const GET_QR_ENDPOINT = 'https://open.youzan.com/api/oauthentry/youzan.pay.qrcode/3.0.0/get'; |
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/** |
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* 获取qr对应的交易. |
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* |
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* @var string |
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*/ |
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const GET_TRADES_ENDPOINT = 'https://open.youzan.com/api/oauthentry/youzan.trades.qr/3.0.0/get'; |
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/** |
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* 获取交易. |
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* |
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* @var string |
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*/ |
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const GET_TRADE_ENDPOINT = 'https://open.youzan.com/api/oauthentry/youzan.trade/3.0.0/get'; |
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/** |
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* 获取access token. |
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* |
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* @return Token |
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*/ |
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public static function getAccessToken() |
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{ |
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if (static::$token) { |
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return static::$token; |
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} |
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$response = static::$httpClient->post(static::GET_TOKEN_ENDPOINT, [ |
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'form_params' => [ |
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'client_id' => static::$apiContext->getClientId(), |
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'client_secret' => static::$apiContext->getClientSecret(), |
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'grant_type' => 'silent', |
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'kdt_id' => static::$apiContext->getKdtId(), |
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] |
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]); |
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$json = \GuzzleHttp\json_decode((string) $response->getBody(), true); |
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$expiresAt = new \DateTime($json['expires_in'] . ' seconds'); |
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return static::$token = new Token($json['access_token'], $expiresAt); |
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} |
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/** |
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* 持久化qrcode. |
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* |
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* @param QRCode $qrCode |
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*/ |
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public static function persistQrCode(QRCode $qrCode) |
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{ |
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$json = static::setRequest('post', static::CREATE_QR_ENDPOINT, [ |
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'qr_name' => $qrCode->getName(), |
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'qr_price' => $qrCode->getPrice(), |
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'qr_type' => $qrCode->getType(), |
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])['response']; |
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$qrCode |
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->setId($json['qr_id']) |
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->setCode($json['qr_code']) |
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->setUrl($json['qr_url']); |
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} |
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/** |
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* 检查QRCode支付结果. |
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* |
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* @param int|QRCode $qrCode |
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* |
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* @return bool |
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*/ |
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public static function checkQRCodePayResult($qrCode) |
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{ |
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if ($qrCode instanceof QRCode) { |
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$qrID = $qrCode->getId(); |
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} else { |
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$qrID = $qrCode; |
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} |
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$json = static::setRequest('get', static::GET_TRADES_ENDPOINT, [ |
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'qr_id' => $qrID, |
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'status' => 'TRADE_RECEIVED', |
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])['response']; |
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return $json['total_results'] > 0; |
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} |
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/** |
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* 获取交易. |
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* |
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* @param int $id |
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* |
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* @return Trade |
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*/ |
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public static function getTrade($id) |
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{ |
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$json = static::setRequest('get', static::GET_TRADE_ENDPOINT, [ |
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'tid' => $id, |
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])['response']; |
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$trade = new Trade(); |
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$trade->setId($id) |
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->setCreated(new \DateTime($json['created'])) |
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->setQrId($json['qr_id']) |
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->setStatus($json['status']); |
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return $trade; |
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} |
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protected static function setRequest($method, $uri, $parameters) |
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{ |
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$token = static::getAccessToken(); |
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if (!$token->isValid()) { |
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throw new \InvalidArgumentException(sprintf('The token "%s" is invalid', $token->getAccessToken())); |
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} |
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$parameters['access_token'] = $token->getAccessToken(); |
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if (strcasecmp($method, 'post') === 0) { |
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$options['form_params'] = $parameters; |
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} else { |
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$options['query'] = $parameters; |
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} |
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$response = static::$httpClient->request($method, $uri, $options); |
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$json = \GuzzleHttp\json_decode((string) $response->getBody(), true); |
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if (isset($json['error_response'])) { |
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throw new \RuntimeException(sprintf('Error request, "%d": "%s"', |
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$json['error_response']['code'], |
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$json['error_response']['msg'] |
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)); |
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} |
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return $json; |
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} |
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/** |
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* @param ApiContext $apiContext |
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*/ |
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public static function setApiContext($apiContext) |
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{ |
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self::$apiContext = $apiContext; |
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} |
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/** |
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* @param Client $httpClient |
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*/ |
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public static function setHttpClient($httpClient) |
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{ |
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self::$httpClient = $httpClient; |
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} |
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/** |
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* @param Token $token |
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*/ |
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public static function setToken($token) |
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{ |
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self::$token = $token; |
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} |
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} |
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.