php微信支付之APP支付方法
本文实例讲述了微信开放平台移动应用集成微信支付功能。分享给大家供大家参考。具体分析如下，更多消息请关注应届毕业生网！ WechatAppPay文件代码如下： ? <?php namespace common\services\WechatPay; class WechatAppPay extends WechatPayBase //package参数 public $package = []; //异步通知参数 public $notify = []; //推送预支付订单参数 protected $config = []; //存储access token和获取时间的文件 protected $file; //access token protected $accessToken; //取access token的url const ACCESS_TOKEN_URL = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s'; //生成预支付订单提交地址 const POST_ORDER_URL = 'https://api.weixin.qq.com/pay/genprepay?access_token=%s'; public function __construct $this->file = __DIR__ . '/payAccessToken.txt'; /** * 创建APP支付最终返回参数 * @throws \Exception * @return multitype:string NULL */ public function createAppPayData $this->generateConfig; $prepayid = $this->getPrepayid; try $array = [ 'appid' => $this->appid, 'appkey' => $this->paySignkey, 'noncestr' => $this->getRandomStr, 'package' => 'Sign=WXPay', 'partnerid' => $this->partnerId, 'prepayid' => $prepayid, 'timestamp' => stringtime, ]; $array['sign'] = $this->sha1Sign$array; unset$array['appkey']; catch\Exception $e throw new \Exception$e->getMessage; return $array; /** * 验证支付成功后的.通知参数 * * @throws \Exception * @return boolean */ public function verifyNotify try $staySignStr = $this->notify; unset$staySignStr['sign']; $sign = $this->signData$staySignStr; return $this->notify['sign'] === $sign; catch\Exception $e throw new \Exception$e->getMessage; /** * 魔术方法，给添加支付参数进来 * * @param string $name 参数名 * @param string $value 参数值 */ public function __set$name, $value $this->$name = $value; /** * 设置access token * @param string $token * @throws \Exception * @return boolean */ public function setAccessToken try if!file_exists$this->file || !is_file$this->file $f = fopen$this->file, 'a'; fclose$f; $content = file_get_contents$this->file; if!empty$content $info = json_decode$content, true; if time - $info['getTime'] < 7150 $this->accessToken = $info['accessToken']; return true; //文件内容为空或access token已失效，重新获取 $this->outputAccessTokenToFile; catch\Exception $e throw new \Exception$e->getMessage; return true; /** * 写入access token 到文件 * @throws \Exception * @return boolean */ protected function outputAccessTokenToFile try $f = fopen$this->file, 'wb'; $token = [ 'accessToken' => $this->getAccessToken, 'getTime' => time, ]; flock$f, LOCK_EX; fwrite$f, json_encode$token; flock$f, LOCK_UN; fclose$f; $this->accessToken = $token['accessToken']; catch\Exception $e throw new \Exception$e->getMessage; return true; /** * 取access token * * @throws \Exception * @return string */ protected function getAccessToken $url = sprintfself::ACCESS_TOKEN_URL, $this->appid, $this->appSecret; $result = json_decode $this->getUrl$url, true ; ifisset$result['errcode'] throw new \Exception"get access token failed:$result['errmsg']"; return $result['access_token']; /** * 取预支付会话标识 * * @throws \Exception * @return string */ protected function getPrepayid $data = json_encode$this->config; $url = sprintfself::POST_ORDER_URL, $this->accessToken; $result = json_decode $this->postUrl$url, $data, true ; if isset$result['errcode'] && $result['errcode'] != 0 throw new \Exception$result['errmsg']; if !isset$result['prepayid'] throw new \Exception'get prepayid failed, url request error.'; return $result['prepayid']; /** * 组装预支付参数 * * @throws \Exception */ protected function generateConfig try $this->config = [ 'appid' => $this->appid, 'traceid' => $this->traceid, 'noncestr' => $this->getRandomStr, 'timestamp' => time, 'package' => $this->generatePackage, 'sign_method' => $this->sign_method, ]; $this->config['app_signature'] = $this->generateSign; catch\Exception $e throw new \Exception$e->getMessage; /** * 生成package字段 * * 生成规则: * 1、生成sign的值signValue * 2、对package参数再次拼接成查询字符串，值需要进行urlencode * 3、将sign=signValue拼接到2生成的字符串后面得到最终的package字符串 * * 第2步urlencode空格需要编码成%20而不是+ * * RFC 1738会把 空格编码成+ * RFC 3986会把空格编码成%20 * * @return string */ protected function generatePackage $this->package['sign'] = $this->signData$this->package; return http_build_query$this->package, '', '&', PHP_QUERY_RFC3986; /** * 生成签名 * * @return string */ protected function generateSign $signArray = [ 'appid' => $this->appid, 'appkey' => $this->paySignkey, 'noncestr' => $this->config['noncestr'], 'package' => $this->config['package'], 'timestamp' => $this->config['timestamp'], 'traceid' => $this->traceid, ]; return $this->sha1Sign$signArray; /** * 签名数据 * * 生成规则: * 1、字典排序，拼接成查询字符串格式，不需要urlencode * 2、上一步得到的字符串最后拼接上key=paternerKey * 3、MD5哈希字符串并转换成大写得到sign的值signValue * * @param array $data 待签名数据 * @return string 最终签名结果 */ protected function signData$data ksort$data; $str = $this->arrayToString$data; $str .= "&key=$this->partnerKey"; return strtoupper $this->signMd5$str ; /** * sha1签名 * 签名规则 * 1、字典排序 * 2、拼接查询字符串 * 3、sha1运算 * * @param array $arr * @return string */ protected function sha1Sign$arr ksort$arr; return sha1 $this->arrayToString$arr ; 希望本文所述对大家的php程序设计有所帮助。