note 52353 deleted from function.header by tularis

Note Submitter: pornel at despammed dot com ---- Please read caching tutorial and test scripts with: http://www.web-caching.com/cacheability.html before copying & pasting all "urban legend" caching headers. Another note: Content-Disposition is non-standard header and sending files with readfile() doesn't support resuming, caching and might be problematic with large files. In some cases it's better to use Apache mod_rewrite instead.