Re: Operator precedence is undefined?

(Piggy-backing on Sara's e-mail, although this is more a response to Sherif and Yasuo.) On 19 July 2013 22:33, Sara Golemon <pollita@php.net> wrote: > I never said that the compiler might magically produce differing results > for the same input. I said that the language's definition does not declare > a defined behavior for such expressions with combined side effects. This is also a classic piece of undefined behaviour in most C-like languages — Bjarne Stroustrup lists it in his C++ FAQ, for instance: http://www.stroustrup.com/bs_faq2.html#evaluation-order. That's not to say that PHP necessarily has to be the same as other languages in its "family" (nested ternaries, anyone?), but I don't think that PHP is really doing anything different here that would make it well defined: AFAIK, the only places PHP makes guarantees about the order of evaluation with regard to binary operators is short circuiting the boolean operators. > As to reverting commits. When the initial commit was made in haste during > an active discussion, a revert is entirely appropriate and has nothing to > do with placing one's opinion over another's. It has to do with placing > the process of consensus building over unilateral cowboy commits. +1. Adam