Captain_kurO

We all know what is a switch statement. Usually we use switch to compare a variable to a set of possible value and determine what action to take if the variable has that value.
For example, supposed we have this code:

if ($i == 0) {
  echo 'Zero';
} else if ($i == 1) {
  echo 'One';
} else {
  echo 'Does...not...compute...';
}

We can transform the above code using switch statement and still keep the same purpose:

switch ($i) {
  case 0:
    echo 'Zero';
    break;
  case 1:
    echo 'One';
    break;
  default:
    echo 'Does...not...compute...';
}

For a long time I thought that this is the limit of switch statement, comparing a variable to a set of finite values. I thought that switch cannot replace if-then-else when it involves some kind of range.
For example, supposed we have this code: Read the rest of this entry »