How wordpress multusite works, how to process subdomains in pure php?

Question

PHP

How wordpress multusite works, how to process subdomains in pure php? or on a node, as it is generally called to google it.
It is the mechanism that is of interest, we specify wildcard in the dns and then one code processes many subdomains.

Answer 1

puff pofik on subdomains. parse $_SERVER['HTTP_HOST'] and dance in logic from there