$.ajax({
          type:‘get‘,
            url: ‘/Weixin/Interviews/wxfx‘,
            data:{
                url:fromurl  //当前url链接
            },
          success: function (result) {  
              console.log(result)
              wx.checkJsApi({
              jsApiList: [‘onMenuShareTimeline‘], // 需要检测的JS接口列表，所有JS接口列表见附录2,
              success: function(res) {
              // 以键值对的形式返回，可用的api值true，不可用为false
              // 如：{"checkResult":{"chooseImage":true},"errMsg":"checkJsApi:ok"}
              }
            });
              if(result.status){
                   wx.config({
                  debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
                  appId: result.info.appId, // 必填，公众号的唯一标识
                  timestamp: result.info.timestamp*1, // 必填，生成签名的时间戳
                  nonceStr: result.info.nonceStr, // 必填，生成签名的随机串
                  signature: result.info.signature,// 必填，签名
                  jsApiList: [‘onMenuShareTimeline‘,‘onMenuShareAppMessage‘] // 必填，需要使用的JS接口列表
                });
              }
            
                  
          }
        });

1. private $appId;
   
2. private $appSecret;
3.  
4. public function __construct($appId, $appSecret) {
   
5. $this->appId = $appId;
   
6. $this->appSecret = $appSecret;
   
7. }

 
 private $appId;
 private $appSecret;
public function getConfig()
{
$jsapiTicket = $this->getJsApiTicket();

    $url = $_GET[‘url‘] ? urldecode($_GET[‘url‘]) : ‘https://‘ . $_SERVER[‘SERVER_NAME‘] . $_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=$nonceStr&timestamp=$timestamp&url=$url";
 
    $signature = sha1($string);
    $signature = strtolower($signature);
 
    $signPackage = array(
        "appId" => $this->AppID,
        "url" => $url,
        "nonceStr" => $nonceStr,
        "timestamp" => $timestamp,
        "signature" => $signature,
        "rawString" => $string,
        "jsapiTicket"=>$jsapiTicket
    );
     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
    $data = json_decode(file_get_contents("jsapi_ticket.json"));
    if ($data->expire_time < time()) {
        $accessToken = $this->getAccessToken();
        
        $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$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;
}
 
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
    $data = json_decode(file_get_contents("access_token.json"));
    if ($data->expire_time < time()) {
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$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;
}
 
private function httpGet($url)
{
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
    curl_setopt($curl, CURLOPT_URL, $url);
 
    $res = curl_exec($curl);
    curl_close($curl);
 
    return $res;
}