Download Pro PHP Application Performance by Armando Padilla - mirror 1 ---> http://po.st/SSxfz3 mirror 2 ---> http://tinyurl.com/p2dhlxw mirror 3 --> http://q.gs/9283027/pro-php-application-performance ---------------
Synopsis: a) It is the only book in existence talking about PHP performance and tuning.
b) It is also the only book that talks about tuning the web application stack from a PHP perspective