Obviously PHP will eventually be replaced by something better, just as Perl was before it, but I honestly don't believe Ruby on Rails is the answer. Rails is not as scalable as PHP, requires far more work to setup and maintain for web hosts, and requires more work for the user.
So few web hosts support Rails, especially in proportion to the huge percentage that support PHP, I think Rails developers who see it as a replacement to PHP to be truly delusional.
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http://benewby.blogspot.com/2008/08/php-is-not-...
So few web hosts support Rails, especially in proportion to the huge percentage that support PHP, I think Rails developers who see it as a replacement to PHP to be truly delusional.