一、准备

corpid      secret

二、获取access_token

https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$corpid&corpsecret=$secret

三、根据 access_token 获取ticket

https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$token

四、计算签名

//随机字符串

$str = time() . rand(111111,999999). 'sqsg';

$nonce_str = substr( md5($str),5,8 );

$timestamp = time(); //当前时间戳

$url = $req['url'];  # 前端传过来的url  当前的页面的url  不含参数

$data = [

    'jsapi_ticket' => $ticket,

    'noncestr'    => $nonce_str,

    'timestamp'      => $timestamp,

    'url'        => $url   

];

$param = "";

foreach($data as $k=>$v){

    $param .= $k.'='.$v.'&';

}

$p = rtrim($param,'&');

//计算签名

$signature = sha1($p);

$response['nonce_str'] = $nonce_str;        #随机数

$response['timestamp'] = $timestamp;      #时间戳

$response['signature'] = $signature;          #签名

$response['url'] = $url;                                #跳转链接

$response['appid'] = corpid;                       #企业号ID

echo json_encode($response);