If you’re using the Google Finance Exchange Rate API and it suddenly stopped working, then don’t be shocked. At first, I thought they now require an API key, but that assumption vanished in seconds after I noticed that https://www.google.com/finance/converter was redirected to https://finance.google.com/finance/converter. So if you’re using file_get_contents to fetch the latest forex rates at https://www.google.com/finance/converter, just change it to https://finance.google.com/finance/converter and it will work just fine. No other major changes, it’s just that the API is now in the subdomain.
Maybe there are announcements this month, but I’m not subscribed to any. I googled “google finance forex API september 2017” but it seems nobody posted or blogged about it or asked about it in Stack Exchange. So, that’ it. I just want to share it!