PHP and Flatfile Database

Hi All, I'm trying to set up a site to use a tab-separated text file to generate dynamic product pages for an online catalogue. MySQL I can do, but I haven't found many resources about doing this with a flat file (I can't use MySQL/PHP on this server.) Does know where I can find some info or examples of doing this? The examples I've seen so far read the whole file into an array and go from there. Is this how it has to be done? I'm thinking I should search the file first, and then only turn the line(s) that match into an array. Is this possible? I'm a bit lost ... -- kind regards, Richard McLean web/graphic/data specialist <http://www.designeffect.com>