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@@ -107,4 +107,108 @@ class Wechat
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}
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return $jsticket;
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}
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+
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+ public function getSignPackage($url) {
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+ $jsapiTicket = $this->getWechatJsApiTicket();
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+
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+ // 注意 URL 一定要动态获取,不能 hardcode.
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+// $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
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+// $url = $this->url?$this->url:"$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
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+ $timestamp = time();
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+ $nonceStr = $this->getRandString(16);
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+
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+ // 这里参数的顺序要按照 key 值 ASCII 码升序排序
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+ $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
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+
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+ $signature = sha1($string);
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+
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+ $signPackage = array(
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+ "appId" => $this->app_id,
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+ "nonceStr" => $nonceStr,
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+ "timestamp" => $timestamp,
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+ "url" => $url,
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+ "signature" => $signature,
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+ "rawString" => $string
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+ );
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+ return $signPackage;
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+ }
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+
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+ /**
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+ * 获取微信基础access_token
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+ * @param bool $updatenow 是否立即刷新
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+ * @return string
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+ */
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+ public function getWechatBasicAccesstoken($updatenow = false)
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+ {
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+ //有效期一般为7200秒,开发者必须在自己的服务全局缓存access_token
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+ //此处保存的access_token为基础的,并非授权的(授权的需要实时获取)
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+
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+ //读取缓存
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+ $access_token = cache('access_token');
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+
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+ //过期或强制刷新时,需重新请求
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+ if(!$access_token || $updatenow) {
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+ $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$this->app_id.'&secret='.$this->app_secret), true);
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+ if(!empty($rs['errmsg'])) {
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+ abort(500, $rs['errmsg']); //请求失败
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+ }
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+
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+ //缓存存储
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+ $access_token = $rs['access_token'];
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+ cache('access_token', $access_token, $rs['expires_in'] - 1000);
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+ }
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+
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+ return $access_token;
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+ }
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+
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+ /**
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+ * 获取微信jsapi_ticket
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+ * @param string $updatenow 是否立即更新
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+ * @return string
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+ */
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+ private function getWechatJsApiTicket($updatenow = false)
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+ {
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+ //有效期7200秒,开发者必须在自己的服务全局缓存jsapi_ticket
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+
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+ //读取缓存
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+ $ticket = cache('jsapi_ticket');
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+
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+ //过期或强制刷新时,需重新请求
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+ if(!$ticket || $updatenow) {
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+ //读取access_token
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+ $access_token = $this->getWechatBasicAccesstoken();
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+
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+ //请求ticket
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+ $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token='.$access_token.'&type=jsapi'), true);
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+ if($rs['errmsg'] != 'ok') { //失败时,强制刷新access_token,再次请求
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+ $access_token = $this->getWechatBasicAccesstoken(true);
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+ $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token='.$access_token.'&type=jsapi'), true);
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+ if($rs['errmsg'] != 'ok') {
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+ abort(500, $rs['errmsg']); //请求失败
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+ }
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+ }
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+
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+ //缓存存储
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+ $ticket = $rs['ticket'];
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+ cache('jsapi_ticket', $ticket, $rs['expires_in'] - 1000);
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+ }
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+
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+ return $ticket;
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+ }
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+
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+ /**
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+ * 获取随机字符串
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+ * @param int $length 字符串长度
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+ * @return null|string
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+ */
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+ private function getRandString($length = 1)
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+ {
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+ $str = null;
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+ $strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
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+ $max = strlen($strPol) - 1;
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+ for($i = 0; $i < $length; $i++) {
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+ $str .= $strPol[rand(0, $max)];
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+ }
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+ return $str;
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+ }
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}
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