Steps: Go to https://github.com/bagder/ca-bundle/tree/e9175fec5d0c4d42de24ed6d84a06d504d5e5a09 Fork or download the repository, put the file ca-bundle.crt in a certain place. Open php.ini, add two lines of code: curl.cainfo=“your-dir/ca-bundle.crt” openssl.cafile=“your-dir/ca-bundle.crt” Everything works fantastically now!   This is useful for your are scraping the Twitter.