There is no release of PHP6 why then is this title PHP6 used

Varuna22:
You're right, this is not the best situation, and you haven't been the first to point it out. I've posted a link to some of our critics and our responses to them here:
http://p2p.wrox.com/content/blogs/jm...essons-learned

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Jim Minatel
Associate Publisher, WROX - A Wiley Brand
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The link seems broken (and the outcome is a "sloppy feeling").

Anyway, for those who've already purchased this book, is there any part of it that isn't valid for PHP 5.3 development? If so, is there any "addendum"?

Apologies for the broken link. I've updated it in my original post and will post it here in my reply too:
http://p2p.wrox.com/content/blogs/jm...essons-learned
The old link was on an old blog that got renamed and moved. I've reposted here to a more permanent spot on wrox.com.

On your bigger question, what in the book won't work in PHP 5.3? Nothing that I'm aware of. If you hit something that isn't backwards compatible, we'd encourage you to share it here.

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Jim Minatel
Associate Publisher, WROX - A Wiley Brand
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That's what I wanted to hear.
Great book. Even for 5.3.

Maybe something 5.3 specific has to be added, like namespaces and closures, but I still have to dig into the depths of the book, since I received it yesterday, so I'm not sure.

Anyway it'll be easy to integrate/incorporate.