php微信支付之APP支付方法_PHP

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：

WechatAppPay文件代码如下：

<br /><?php<br />namespace common\services\WechatPay;<br />class WechatAppPay extends WechatPayBase<br />{<br />    //package参数<br />    public $package = [];<br />    //异步通知参数<br />    public $notify = [];<br />    //推送预支付订单参数<br />    protected $config = [];<br />    //存储access token和获取时间的文件<br />    protected $file;<br />    //access token<br />    protected $accessToken;<br />    //取access token的url<br />    const ACCESS_TOKEN_URL = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s';<br />    //生成预支付订单提交地址<br />    const POST_ORDER_URL = 'https://api.weixin.qq.com/pay/genprepay?access_token=%s';<br />    public function __construct()<br />    {<br />        $this->file = __DIR__ . '/payAccessToken.txt';<br />    }<br />    /**<br />     * 创建APP支付最终返回参数<br />     * @throws \Exception<br />     * @return multitype:string NULL<br />     */<br />    public function createAppPayData()<br />    {<br />        $this->generateConfig();<br />        $prepayid = $this->getPrepayid();<br />        try{<br />            $array = [<br />                'appid' => $this->appid,<br />                'appkey' => $this->paySignkey,<br />                'noncestr' => $this->getRandomStr(),<br />                'package' => 'Sign=WXPay',<br />                'partnerid' => $this->partnerId,<br />                'prepayid' => $prepayid,<br />                'timestamp' => (string)time(),<br />            ];<br />            $array['sign'] = $this->sha1Sign($array);<br />            unset($array['appkey']);<br />        } catch(\Exception $e) {<br />            throw new \Exception($e->getMessage());<br />        }<br />        return $array;<br />    }<br />    /**<br />     * 验证支付成功后的通知参数<br />     * <br />     * @throws \Exception<br />     * @return boolean<br />     */<br />    public function verifyNotify()<br />    {<br />        try{<br />            $staySignStr = $this->notify;<br />            unset($staySignStr['sign']);<br />            $sign = $this->signData($staySignStr);<br />            return $this->notify['sign'] === $sign;<br />        } catch(\Exception $e) {<br />            throw new \Exception($e->getMessage());<br />        }<br />    }<br />    /**<br />     * 魔术方法，给添加支付参数进来<br />     * <br />     * @param string $name  参数名<br />     * @param string $value  参数值<br />     */<br />    public function __set($name, $value)<br />    {<br />        $this->$name = $value;<br />    }<br />    /**<br />     * 设置access token<br />     * @param string $token<br />     * @throws \Exception<br />     * @return boolean<br />     */<br />    public function setAccessToken()<br />    {<br />        try{<br />            if(!file_exists($this->file) || !is_file($this->file)) {<br />                $f = fopen($this->file, 'a');<br />                fclose($f);<br />            }<br />            $content = file_get_contents($this->file);<br />            if(!empty($content)) {<br />                $info = json_decode($content, true);<br />                if( time() - $info['getTime'] < 7150 ) {<br />                    $this->accessToken = $info['accessToken'];<br />                    return true<mark>@本文来源gaodaimacom搞#代%码@网-</mark><strong>搞代gaodaima码</strong>;<br />                }<br />            }<br />            //文件内容为空或access token已失效，重新获取<br />            $this->outputAccessTokenToFile();<br />        } catch(\Exception $e) {<br />            throw new \Exception($e->getMessage());<br />        }<br />        return true;<br />    }<br />    /**<br />     * 写入access token 到文件<br />     * @throws \Exception<br />     * @return boolean<br />     */<br />    protected function outputAccessTokenToFile()<br />    {<br />        try{<br />            $f = fopen($this->file, 'wb');<br />            $token = [<br />                'accessToken' => $this->getAccessToken(),<br />                'getTime' => time(),<br />            ];<br />            flock($f, LOCK_EX);<br />            fwrite($f, json_encode($token));<br />            flock($f, LOCK_UN);<br />            fclose($f);<br />            $this->accessToken = $token['accessToken'];<br />        } catch(\Exception $e) {<br />            throw new \Exception($e->getMessage());<br />        }<br />        return true;<br />    }<br />    /**<br />     * 取access token<br />     * <br />     * @throws \Exception<br />     * @return string<br />     */<br />    protected function getAccessToken()<br />    {<br />        $url = sprintf(self::ACCESS_TOKEN_URL, $this->appid, $this->appSecret);<br />        $result = json_decode( $this->getUrl($url), true );<br />        if(isset($result['errcode'])) {<br />            throw new \Exception("get access token failed:{$result['errmsg']}");<br />        }<br />        return $result['access_token'];<br />    }<br />    /**<br />     * 取预支付会话标识<br />     * <br />     * @throws \Exception<br />     * @return string<br />     */<br />    protected function getPrepayid()<br />    {<br />        $data = json_encode($this->config);<br />        $url = sprintf(self::POST_ORDER_URL, $this->accessToken);<br />        $result = json_decode( $this->postUrl($url, $data), true );<br />        if( isset($result['errcode']) && $result['errcode'] != 0 ) {<br />            throw new \Exception($result['errmsg']);<br />        }<br />        if( !isset($result['prepayid']) ) {<br />            throw new \Exception('get prepayid failed, url request error.');<br />        }<br />        return $result['prepayid'];<br />    }<br />    /**<br />     * 组装预支付参数<br />     * <br />     * @throws \Exception<br />     */<br />    protected function generateConfig()<br />    {<br />        try{<br />            $this->config = [<br />                    'appid' => $this->appid,<br />                    'traceid' => $this->traceid,<br />                    'noncestr' => $this->getRandomStr(),<br />                    'timestamp' => time(),<br />                    'package' => $this->generatePackage(),<br />                    'sign_method' => $this->sign_method,<br />            ];<br />            $this->config['app_signature'] = $this->generateSign();<br />        } catch(\Exception $e) {<br />            throw new \Exception($e->getMessage());<br />        }<br />    }<br />    /**<br />     * 生成package字段<br />     * <br />     * 生成规则:<br />     * 1、生成sign的值signValue<br />     * 2、对package参数再次拼接成查询字符串，值需要进行urlencode<br />     * 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<br />     * <br />     * 第2步urlencode空格需要编码成%20而不是+<br />     * <br />     * RFC 1738会把 空格编码成+<br />     * RFC 3986会把空格编码成%20<br />     * <br />     * @return string<br />     */<br />    protected function generatePackage()<br />    {<br />        $this->package['sign'] = $this->signData($this->package);<br />        return http_build_query($this->package, '', '&', PHP_QUERY_RFC3986);<br />    }<br />    /**<br />     * 生成签名<br />     * <br />     * @return string<br />     */<br />    protected function generateSign()<br />    {<br />        $signArray = [<br />            'appid' => $this->appid,<br />            'appkey' => $this->paySignkey,<br />            'noncestr' => $this->config['noncestr'],<br />            'package' => $this->config['package'],<br />            'timestamp' => $this->config['timestamp'],<br />            'traceid' => $this->traceid,<br />        ];<br />        return $this->sha1Sign($signArray);<br />    }<br />    /**<br />     * 签名数据<br />     * <br />     * 生成规则:<br />     * 1、字典排序，拼接成查询字符串格式，不需要urlencode<br />     * 2、上一步得到的字符串最后拼接上key=paternerKey<br />     * 3、MD5哈希字符串并转换成大写得到sign的值signValue<br />     * <br />     * @param array $data 待签名数据<br />     * @return string 最终签名结果<br />     */<br />    protected function signData($data)<br />    {<br />        ksort($data);<br />        $str = $this->arrayToString($data);<br />        $str .= "&key={$this->partnerKey}";<br />        return strtoupper( $this->signMd5($str) );<br />    }<br />    /**<br />     * sha1签名<br />     * 签名规则<br />     * 1、字典排序<br />     * 2、拼接查询字符串<br />     * 3、sha1运算<br />     * <br />     * @param array $arr<br />     * @return string<br />     */<br />    protected function sha1Sign($arr)<br />    {<br />        ksort($arr);<br />        return sha1( $this->arrayToString($arr) );<br />    }<br />}<br />

希望本文所述对大家的php程序设计有所帮助。

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