Using PHP to determine if a remote file has been replaced?

Posted by Rob on Stack Overflow See other posts from Stack Overflow or by Rob
Published on 2010-04-27T06:10:56Z Indexed on 2010/04/27 6:23 UTC
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I have a MySQL database with some URLs in it. One URL per row. Each URL has my script on it. What I am wanting to do, is check if the file is still there via a PHP script. Not check if it 404'd, but rather check if it has been modified or replaced. Is this possible? If so, how would it be accomplished?

I was thinking making the remote file echo some string, and having the local file check the page for that string, but that seems a little inefficient and sloppy.

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Using PHP to determine if a remote file has been replaced? - Developer IT

Using PHP to determine if a remote file has been replaced?

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