Why “switch(true){}” in php with a strange logic?

Question

switch(false) {
    case \'blogHitd\':
        echo(\'ffffd\');
        break;
    case false:
        echo(\'bbbb\');
        break;
    default:
        echo \'alert         


        

Answer 1

In this scenario the switch only runs the first valid case.

It is useful in the case that you have more than one possible answer but you want to run only the first one. For example:

switch(true){
 case 1 == 2:
   echo '1 == 2';
   break;

 case 2 == 2:
   echo '2 == 2';
   break;

 case 3 == 3:
   echo '3 == 3';
   break;

 case 4 == 1:
   echo '4 == 1';
   break;
}

The output: 2 == 2

Both the second and third cases are true, but we only get the second (which is the first TRUE).