robots.txt question

I'm sure I could figure this out on my own, I just wanted to be 5000% sure I do this right.

How would my robots.txt file look if I wanted to block .php extensions from being crawled by all search engines? Only .php, everything else is allowed.

Thanks!!

I dont think robots.txt files where designed to be that sophisticated.

I take it there's to many different php files to list them individually in robots.txt?

You could put all your .php files in a separate directory and then disallow that directory in robots.txt.

Is there no way to just block *.php?

Just found this (scroll to bottom):
http://www.searchengineworld.com/mis..._txt_crawl.htm

It indicates Google will recognize disallowing of certain file extensions, but other bots may not.

Thank you.. that's extremely helpful!

You could put the robots meta tag on each php page.