http://www.shuijingwanwq.com/2018/02/28/2406/
https://curl.haxx.se/docs/caextract.html
编辑 php.ini，修改 ;curl.cainfo = 为 curl.cainfo = “C:\php-7.1.12\extras\ssl\cacert.pem”
解决Twilio本地Postman请求时报错SSL certificate problem: unable to get local issuer certificate
原文：https://www.cnblogs.com/denghuachengle/p/11682209.html