Re: Simple logic but can't get it right

You are testing unset variables. This will work as you expect: <?php

            $a = 1;
            $id = "outside";

            if ($a == 0) {
                        $b = 1;
                        $id = "a";
            }

            elseif (isset($b) && $b == 0) {
                        $c = 1;
                        $id = "b";
            }
            elseif (isset($c) && $c == 0){

                        $d = 1;
                        $id = "c";
            }

echo "ID = $id<br>"; //Output is "b"...WHY?? It should be "outside"... ?> Choy, Wai Yew wrote:

Hi gurus, I've the following piece of PHP code....It is a simple logic but I can't get it right....The output result of $id is "b"!!...It should be "outside", right?? I think it is the variable $b....Coz' it depend on the previous check ( if ($a == 0) ) for the value... If this is the case, how can I get this logic works?? Thanks a million, Choy <?php

            $a = 1;

            $id = "outside";

            
            if ($a == 0) {

                  
                        $b = 1;

                        $id = "a";

                  
            }

            elseif ($b == 0) {

                  
                        $c = 1;

                        $id = "b";

                  
            }

            elseif ($c == 0){

                  
                        $d = 1;

                        $id = "c";

                  
            }

echo "ID = $id<br>"; //Output is "b"...WHY?? It should be "outside"... ?>

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