Let's say I have a switch statement like this:
switch ($var)
{
case 'A':
$a = 1;
break;
case 'B':
$a = 1;
$b = 2;
break;
case 'C':
$a = 1;
$b = 2;
$c = 3;
break;
}
有没有一种方法可以重构这个switch语句,让重复的"$a = 1"和"$b = 2"只出现一次?