PHP switch case more than one value in the case

Question

I have a variable that holds the values \'Weekly\', \'Monthly\', \'Quarterly\', and \'Annual\', and I have another variable that holds the values from 1 to 10.

Answer 1

switch ($var2) {
       case 1 :
       case 2 :
          $var3 = 'Weekly';
          break;
       case 3 :
          $var3 = 'Monthly';
          break;
       case 4 :
       case 5 :
          $var3 = 'Quarterly';
          break;
}

Everything after the first matching case will be executed until a break statement is found. So it just falls through to the next case, which allows you to "group" cases.

Answer 2

The simplest and probably the best way performance-wise would be:

switch ($var2) {
    case 1:
    case 2:
       $var3 = 'Weekly';
       break;
    case 3:
       $var3 = 'Monthly';
       break;
    case 4:
    case 5:
       $var3 = 'Quarterly';
       break;
}

Also, possible for more complex situations:

switch ($var2) {
    case ($var2 == 1 || $var2 == 2):
        $var3 = 'Weekly';
        break;
    case 3:
        $var3 = 'Monthly';
        break;
    case ($var2 == 4 || $var2 == 5):
        $var3 = 'Quarterly';
        break;
}

In this scenario, $var2 must be set and can not be null or 0

Answer 3

Switch is also very handy for A/B testing. Here is the code for randomly testing four different versions of something:

$abctest = mt_rand(1, 1000);
switch ($abctest) {
    case ($abctest < 250):
        echo "A code here";
        break;
    case ($abctest < 500):
        echo "B code here";
        break;
    case ($abctest < 750):
        echo "C code here";
        break;
    default:
        echo "D code here";
        break;