I've used all three of these when making local programmatic connections to databases. Is there any real difference between them?
Localhost is a hostname that refers to the local machine currently making the request. On many computers, localhost is an alias for the IP address 127.0. 0.1. When a computer pings this IP address, it is communicating with itself.
Localhost is often considered synonymous with the IP address 127.0. 0.1.
Definition: Localhost: “Localhost refers to the local computer that a program is running on”. Webhosting: “In order to publish a website online, you need a Web host. The Web host stores all the pages of your website and makes them available to computers connected to the Internet”.
What is localhost used for? Developers use the local host to test web applications and programs. Network administrators use the loopback to test network connections. Another use for the localhost is the host's file, where you can use the loopback to block malicious websites.
The final result is the same. The difference is:
That's the theory. In practice, I don't think there is substantial difference in performance or features if you use either one of them.
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