php 调用jssdk 获取用户经纬度

1.首先得去公众号设置一下白名单:https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html
2.引入js文件:

 <script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>

 <script type="text/javascript">
		//前后端分离的话,这里可以发送请求去服务器获取配置信息,mvc结构也可以直接把配置信息赋值到该页面
        wx.config({
            // debug: true,
            appId: '{{$signPackage["appId"]}}',
            timestamp: '{{$signPackage["timestamp"]}}',
            nonceStr: '{{$signPackage["nonceStr"]}}',
            signature: '{{$signPackage["signature"]}}',
            jsApiList: [
                'onMenuShareQQ',
                'onMenuShareWeibo',
                'hideMenuItems',
                'showMenuItems',
                'hideAllNonBaseMenuItem',
                'showAllNonBaseMenuItem',
                'openLocation',
                'getLocation',
                'scanQRCode',
                'checkJsApi'
            ]

        });
        wx.ready(function () {

            document.querySelector('#nearby_clinic_list').onclick = function () {
                //微信获取地理位置并拉取用户列表（用户允许获取用户的经纬度）
                wx.getLocation({
                    success: function (res) {
                        var latitude = res.latitude; // 纬度，浮点数，范围为90 ~ -90
                        var longitude = res.longitude; // 经度，浮点数，范围为180 ~ -180。
                    },
                    cancel: function (res) {
                        $(".city").triggerHandler("focus");
                    }
                });
            }
        });
    </script>

php代码:
demo.php

include_once "JsSdk.php";
$appid = '';
$appSecret = '';
$jssdk = new JsSdk($appid, $appSecret);
$signPackage = $jssdk->GetSignPackage();
echo json_encode($signPackage);

JsSdk.php

class JsSdk{
    private $appId;
    private $appSecret;

    public function __construct($appId, $appSecret) {
        $this->appId = $appId; //$appId;
        $this->appSecret = $appSecret; //$appSecret;
    }

    public function getSignPackage() {
        $jsapiTicket = $this->getJsApiTicket();

        // 注意 URL 一定要动态获取，不能 hardcode.
        $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
        $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
        $timestamp = time();
        $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=$nonceStr×tamp=$timestamp&url=$url";
        $signature = sha1($string);
        $signPackage = array(
            "appId"     => $this->appId,
            "nonceStr"  => $nonceStr,
            "timestamp" => $timestamp,
            "url"       => $url,
            "signature" => $signature,
            "rawString" => $string
        );
        return $signPackage;
    }

    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;
    }

    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
        // 也可以存在缓存里,自己决定
        $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) {
                //以下是写入json文件中,也可以存在缓存中
                $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;
    }

    private function getAccessToken() {
        // access_token 应该全局存储与更新，以下代码以写入到文件中做示例
        // 也可以存在缓存里,自己决定
        $data = json_decode(file_get_contents("access_token.json"));
        if ($data->expire_time < time()) {
            // 如果是企业号用以下URL获取access_token
            // $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
            $res = json_decode($this->httpGet($url));
            $access_token = $res->access_token;
            if ($access_token) {
                //以下是写入json文件中,也可以存在缓存中
                $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;
    }

    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;
    }


}

access_token.json (也可以用缓存替代json文件存储)

{
  "expire_time":1512922570,
  "access_token":"wQa4AGRTmXwun9Qye48OPDO18Fx2T-cGqTjhBGpssyMpSaiI2as99ciBV37FuYFrLRie5fwrCw47MXGCX2SY2i-2XN909lhQoTZyrIiA2WdD-YEudzjR_SxJI5et-xTRSEUeAGAMYO"
}

jsapi_ticket.json (也可以用缓存替代json文件存储)

{
  "expire_time":1512922571,
  "jsapi_ticket":"HoagFKDcsGMVCIY2vOjf9mT4ju3rxy04aeG7NNO75kaTThnNYfb4U4CF6ZGLIfOE-MVWMjmcSs2gpgs7WXDX2Q"
}