微信封装的调用微信签名包的类库

<?php  namespace Home\Model;  use Think\Model;  class WechatModel extends Model {  private $_token = ''; //令牌      private $appid;      private $appsecret;    public function __construct()    {      $this->appid = C('APPID');//公众号的appid      $this->appsecret = C('APPSECRET');//公众号的秘钥    }    //调用js-sdk的签名包    public function getSignPackage() {    $jsapiTicket = $this->getJsApiTicket();    // 注意 URL 一定要动态获取，不能 hardcode.（获取当前网页的url）    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";    $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";    //时间戳    $timestamp = time();    //随机字符串获取    $nonceStr = $this->createNonceStr();    // 这里参数的顺序要按照 key 值 ASCII 码升序排序    $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";    //生成字符串是用来签名用的    $signature = sha1($string);    $signPackage = array(     "appId"   => $this->appid,     "nonceStr" => $nonceStr,     "timestamp" => $timestamp,     "url"    => $url,     "signature" => $signature,     "rawString" => $string    );    return $signPackage;    }   //使用会员卡领取的签名包   public function getHuiYuanSignPackage() {    $apiTicket = $this->getApiTicket();    // 注意 URL 一定要动态获取，不能 hardcode.（获取当前网页的url）    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";    $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";    //时间戳    $timestamp = time();    //随机字符串获取    // $nonceStr = $this->createNonceStr();    // 这里参数的顺序要按照 key 值 ASCII 码升序排序    $string = $timestamp.$apiTicket."car_id";//card_id为自己创建的会员卡的id    //生成字符串是用来签名用的    $signature = sha1($string);    $signPackage = array(     "timestamp" => $timestamp,     "signature" => $signature,    );    return $signPackage;    }   //获取会员卡的api_ticket   public function getApiTicket(){   $data = json_decode(file_get_contents("api_ticket.json"));    if ($data->expire_time < time()) {     $accessToken = $this->getAccessToken();     $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=wx_card&access_token=$accessToken";     $res = json_decode($this->httpGet($url));     $ticket = $res->ticket;     if ($ticket) {      $data->expire_time = time() + 7000;      $data->jsapi_ticket = $ticket;      $fp = fopen("api_ticket.json", "w");      fwrite($fp, json_encode($data));      fclose($fp);     }    } else {     $ticket = $data->jsapi_ticket;    }    return $ticket;   }   //获取随机字符串   private function createNonceStr($length = 16) {    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";    $str = "";    for ($i = 0; $i < $length; $i++) {     $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);    }    return $str;   }    //获取Access Token    public function getAccessToken(){    //将json字符串转换为json对象（json_encode是将数组转换为json字符串，json_decode("",true) 如果加true是将json字符串转化为php数组，不加true转换为PHP对象）    $data = json_decode(file_get_contents("access_token.json"));    if ($data->expire_time < time()) {     // 如果是企业号用以下URL获取access_token     $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appid&secret=$this->appsecret";     $res = json_decode($this->httpGet($url));     $access_token = $res->access_token;   if ($access_token) {      $data->expire_time = time() + 7000;      $data->access_token = $access_token;      $fp = fopen("access_token.json", "w");      fwrite($fp, json_encode($data));      fclose($fp);   }    } else {     $access_token = $data->access_token;    }    return $access_token;    }   //获取jsapi_ticket(jsapi_ticket是公众号用于调用微信JS接口的临时票据)    private function getJsApiTicket() {    // jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例    $data = json_decode(file_get_contents("jsapi_ticket.json"));    if ($data->expire_time < time()) {     $accessToken = $this->getAccessToken();     // 如果是企业号用以下 URL 获取 ticket     // $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";     $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";     $res = json_decode($this->httpGet($url));     $ticket = $res->ticket;     if ($ticket) {      $data->expire_time = time() + 7000;      $data->jsapi_ticket = $ticket;      $fp = fopen("jsapi_ticket.json", "w");      fwrite($fp, json_encode($data));      fclose($fp);     }    } else {     $ticket = $data->jsapi_ticket;    }    return $ticket;   }    //获取用户的openid    public function openId(){    $url = $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];       if (!isset($_GET['code'])) {       //获取组装的url        $openidUrl = $this->snsapi_base($url);        redirect($openidUrl);      }else{        $openidAccess_token = $this->openidAccess_token($_GET['code']);        return $openidAccess_token;      }    }     //获取微信用户的opnid    public function getOpenId($openid,$access_token)    {      $userInfo = $this->getUserInfo($openid,$access_token);      return $userInfo;    }     public function snsapi_base($redirect_uri, $scope = "snsapi_userinfo", $state = 0)    {      $appId = $this->appid;      $url = "https://open.weixin.qq.com/connect/oauth2/authorize";      $url .= "?appid=$appId";      $url .= "&redirect_uri=http://$redirect_uri";      $url .= "&response_type=code";      $url .= "&scope=$scope";      $url .= "&state=$state#wechat_redirect";      return $url;    }  public function openidAccess_token($code){      $appId = $this->appid;      $appSecret= $this->appsecret;      $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appId&secret=$appSecret&code=$code&grant_type=authorization_code";      return json_decode($this->httpGet($url),true);    }    //获取用户信息    public function getUserInfo($openid, $access_token){    $url = "https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openid&lang=zh_CN ";      return json_decode($this->httpGet($url),true);     //请求    }  private function httpGet($url) {    $curl = curl_init();    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);    curl_setopt($curl, CURLOPT_TIMEOUT, 500);    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);    curl_setopt($curl, CURLOPT_URL, $url);    $res = curl_exec($curl);    curl_close($curl);    return $res;   }  }

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