How to crawl 1000 sites as quickly as possible and get the response code from the main page?

Question

PHP

Good evening comrades.
There is a need to go around 1000 (well, about that) sites, and get the response code of the main page, i.e. code 200 for example (if everything is ok). By what means can this be done as quickly as possible? (dedicated server).

Answer 1

$ wget --server-response -O /dev/null -i urls.txt