Phoenix.pm: Best PHP reference book?

[Victor Odhner]

I was given an Amazon gift certificate and thought I'd
buy a PHP book.

I have a strong PerlCGI/Apache background and can
certainly teach myself PHP, so what I need is a book
with long-term reference value:  rigorous syntax
definition, examples of how to do non-trivial things,
etc.

Can someone suggest a good PHP reference book?

O&BTW, "aztechbiz.com" doesn't seem to recognize
the AZPHP list I used to belong to.  Does the
AZPHP list still exist?

Thanks,

Vic