How to make a link shortener?

Question

PHP

I want to make my own link shortener. I understand everything how to do it.
1. A link is taken that needs to be shortened.
2. It is written to the database and given a unique code (123 or hsu1)
3. To open the link, use the address example.com/123
But how to implement the last point?

Answer 1

You can take a ready-made script, for example Phurl , and see how it works

Answer 2

This is done through .htaccess. Requests for a script to redirect, which will take a link from the database and redirect

Answer 3

buy example.com
create an API to build links and use
profit links. more precisely debet.