> This is a great talk / slideshow and definitely is a better way to > drive home the point that PHP execution speed is relatively > meaningless in terms of user experience. Well, at least up to a > point... if it takes 0.1 per response, with 10 users will be 1 second to wait ... if it takes 0.02 per user, you can manage much more users. It is that simple, and thee reason there is APC, other op cache managers/optimizers, is that speed is always critical for high traffic websites/services ... and if there is a possibility to help, the same way you justify APC, since PHP is not the bottleneck, I don't get why you are blaming me to use best practices ... seriously, what's wrong with me using ++$i it's absolutely a mystery!!! I guess you develop without caring about INSERT DELAYED when necessary, mysql_fetch_row when you know the structure, rather than mysql_fetch_assoc, and everything else that could preserve half a second ... Google servers truncated layout to make everything faster, I can only smile thinking about your arguments in a Google interview ... "who care about optimizations, I am already loads of crap due to slow queries" ... well, it's your choice, and not my fault. Regards ... and thanks for the slide _________________________________________________________________ Windows Live Hotmail: Your friends can get your Facebook updates, right from Hotmail®. http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_4:092009