切换多个case语句

Question

有人可以建议我如何替换以下代码 如何重写代码以避免重复块case 3:{code block A; break;}

switch(i){
  case 1:{code block A; break;}
  case 2:{code block b; break;}
  case 3:{code block A; break;}
  default: {code block default; break;}
}

如何为案例1和案例组合代码案例3

Answer 1

此格式显示在PHP docs：

中

switch (i) {
    case 1:
    case 3:
        code block A;
        break;
    case 2:
        code block B;
        break;
    default:
        code block default;
        break;
}

Answer 2

像这样的东西

switch(i){
    case 1:
    case 3:{code block A; break;}
    case 2:{code block b; break;}
    default: {code block default; break;}
}

Answer 3

类似

    $i = 10;
    switch($i){
        case $i == 1 || $i > 3:
            echo "working";
            break;
        case 2:
            echo "i = 2";
            break;
        default: 
          echo "i = $i";
          break;
    }