Thanks for the response. I don't think i'm able to use opendir. I will instead use the php ftp functions. Although i worry a little about resource time, if i'm opening up lots of ftp connections all the time.
I'm not sure there's a big difference between opening up a FTP resource or using a http URL wrapper via opendir(). Certainly the latter has few less lines of PHP code to parse and process, but once you get "under the hood", there may not be that much difference. (Or not, I couldn't be sure without doing some metering.)
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