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? >
