Question

I have to execute multiple set of instructions based upon a value, for example.

$value = 'AA';
switch ($value) {
    case 'AA':
        echo "value equals  1";
    continue;
    case 'BB':
        echo "value equals 2";
    continue;
    case 'CC' || 'AA':
        echo "value equals 3";
    break;
}

What i am expecting from the above code is it should execute multiple cases based upon the values passed, the variable $value contains AA as the value so hence i am expecting it to execute both

case 'AA' and
case 'CC' || 'AA'

so it should print out value equals 1 value equals 3 however it does not execute it that way i am getting only value equals 1 as output. and if i remove continue from the statement it executes all three cases which is logically wrong. does the PHP’s switch statement support multiple cases to be executed based on a single value? is there any workaround for this?

thank you..

Answer 1

When a break is missing then a switch statement enables falling through to the next condition:

$value = 'AA';
switch ($value) {
    case 'AA':
        echo "value equals  1"; // this case has no break, enables fallthrough
    case 'CC':
        echo "value equals 3"; // this one executes for both AA and CC
    break;
    case 'BB':
        echo "value equals 2";
    break;
}