* Thus wrote Hodicska Gergely: > Hi! > > > I think the precedence of left and right associative operands can't > be > compared. The switch between associativities already separates the > > expression (if it could be explained this way). > > Yes, this behaviour confused me. This is not common in other programming > languages: > o C : invalid lvalue in assignment > o Java : required: variable > found : value > o JavaScript: invalid assignment left-hand side (Mozilla) > syntax error (Internet explorer) > > But for me it isn't egxactly clear how the evaluation order was > calculated (why doesn't the first = operator executed before &&). Does > anybody know for example a flowchart, how it is implemented in PHP? I kind of hinted in my earlier what is going on but: $a = 1 && $b = 0; Is first silently evaluated as: $a = (1 && $b = 0); Now we test the left and right expressions of &&. The left expression is true. So the right expression is tested which happens to be ($b = 0). Curt -- Quoth the Raven, "Nevermore." -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
