Urgent due to failure of another supplier.
I have a master property portal which I need to have synchronized on a weekly basis with the listings of 50 slave sites. Each slave has between 30 and 300 listings.
All use the same script based on php and mySQL.
Ideal solution will not put heavy load on the server but I am also willing to consider a simple solution.
We have a php import file which uses .csv files already in place. We also have a sitemap that delivers all listings from each slave.
Your PM should suggest the reasons for your solution to this project.