Ternary operator works the same in every language I've encountered… you can expand every such statement to an if-then-else if it makes you feel better. Not every operator in math is transitive, either. a - b is not the same as b - a, for example. On Oct 17, 2013, at 7:51 PM, Tim-Hinnerk Heuer <th.heuer@xxxxxxxxx> wrote: > No, but when you add stuff it gets the same result from left to right as > from right to left. > So, the ternary operator is more related to logic, even though logic > belongs to math. > > Tim-Hinnerk Heuer > > Twitter: @geekdenz > Blog: http://www.thheuer.com > > > On 18 October 2013 13:49, Daniel <danielx386@xxxxxxxxx> wrote: > >> On Fri, Oct 18, 2013 at 11:46 AM, Tim-Hinnerk Heuer <th.heuer@xxxxxxxxx> >> wrote: >>> Hi, >>> >>> I've been a PHP programmer for several years now and have a bit of a >>> love-hate relationship with it. It's great for doing something quickly, >>> especially web stuff, but recently I have heard people moaning about PHP >> a >>> lot and did some research and found this: >>> >>> http://webonastick.com/php.html >>> >>> One thing I had to get my head around is this: >>> The ternary operator >>> <?php >>> $foo = 1; >>> print(($foo == 1) ? "uno" : ($foo === 2) ? "dos" : "tres"); >>> print("\n"); >>> >>> outputs >>>>> dos >>> >>> because the operator is left-to-right associative instead of >> right-to-left >>> as in other languages. I was thinking there must be a reason for this. >>> Speed? Is it faster to evaluate/implement all operators as left-to-right? >>> >>> I noticed that the above could easily be fixed by saying: >>> >>> <?php >>> $foo = 1; >>> print(($foo == 1) ? "uno" : (($foo === 2) ? "dos" : "tres")); >>> print("\n"); >>> >>> outputs >>>>> uno >>> >>> Was this a deliberate design decision or is it a flaky implementation of >>> the ternary operator? >>> >>> Tim-Hinnerk Heuer >>> >>> Twitter: @geekdenz >>> Blog: http://www.thheuer.com >> >> >> Maybe it just me but I look at it the same as math, you don't add >> something up from right to left do you? >> -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
