Written tutorial:
https://technetzz.com/a-quick-guide-t...
This video is about fixing the curl error 60: SSL certificate problem in PHP(using XAMP). The fix has been done in the Windows environment. Therefore, the proposed solution may not work for you if you are using a different operating system. But it should also work for PHP used in MAMP or WAMP in Windows OS.
cacert.pem file download link: https://curl.haxx.se/ca/cacert.pem