http://php.flashwebhost.com/sherly/dogs.php

Code:
<?php

$dogsCanFly = 'yes';  // try changing the value to 'no'

if ($dogsCanFly =='yes') {
   echo 'we choose got to space';
}

if (dogsCanFly == 'no') {
   echo 'Kennel is better than space.';
}