PUBLIC MARKS from parmentierf with tags licence & php

First of all you have to get a licence from the NLM, which allows your IP address to access the MEDLINE FTP server. This PHP script will fetch all the most up-to-date MEDLINE XML files, then create a folder (and some sub-folders) full of several million gzipped, serialised PHP files, each one containing an individual article accessible by PMID.