PHP获取微信JS-SDK接口设置（access_token、jsapi_ticket、signature）

前端引入JS文件

<script src="http://res.wx.qq.com/open/js/jweixin-1.6.0.js"></script>
或
<script src="http://res2.wx.qq.com/open/js/jweixin-1.6.0.js"></script>

后端

PHP-Main

if (empty(Cache::get('accessToken'))) {
                $access_token = $this->getAccessToken($setting['weixin_appid'], $setting['weixin_appsecret']);// 传入微信公众号信息
                Cache::set('accessToken', $access_token, 7200);
            }
            else {
                $access_token = Cache::get('accessToken');
            }
            if (empty(Cache::get('jsapiTicket'))) {
                $jsapi_ticket = $this->getJsapiTicket($access_token);// 传入access_token
                Cache::set('jsapiTicket', $jsapi_ticket, 7200);
            }
            else {
                $jsapi_ticket = Cache::get('jsapiTicket');
            }

            if ($jsapi_ticket) {
                $timestamp = time();
                $nonceStr  = $this->createNonceStr();
                $http      = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
                $url       = "$http$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]"; // 调用JSSDK的页面地址
                $str       = "jsapi_ticket={$jsapi_ticket}&noncestr={$nonceStr}&timestamp={$timestamp}&url={$url}";
                $signature = sha1($str);
　　　　　　　}

//$access_token、$jsapi_ticket、$signature均已获取

PHP-Function

public function getAccessToken($appid, $secret)
    {
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$appid}&secret={$secret}";
        $res = $this->curl_get($url);
        if ($res['errcode'] != 0) return false;// 获取AccessToken错误
        return $res['access_token'];
    }
public function getJsapiTicket($access_token)
    {
        $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token={$access_token}&type=jsapi";
        $res = $this->curl_get($url);
        if ($res['errcode'] != 0) return false;// 获取JsapiTicket错误
        return $res['ticket'];
    }

public function curl_get($url)
    {
        $headerArray = array("Content-type:application/json;", "Accept:application/json");
        $ch          = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headerArray);
        $output = curl_exec($ch);
        curl_close($ch);
        $output = json_decode($output, true);
       return $output;
    }


public function curl_post($url, $data)
    {
        $data        = json_encode($data);
        $headerArray = array("Content-type:application/json;charset='utf-8'", "Accept:application/json");
        $curl        = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        curl_setopt($curl, CURLOPT_HTTPHEADER, $headerArray);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($curl);
        curl_close($curl);
        return json_decode($output, true);
    }

public 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;
    }