php学习笔记（三）循环和选择分支

php学习笔记（三）循环和选择分支

//退出两层循环

break 2;

//跳过2次循环

continue 2;

$num = $_REQUEST["num"];

//switch.php?num=...

//因为是弱类型，所以都可以

switch ($num){

case "abc":

echo "abc";

break;

case 1:

echo "1";

break;

case 2:

echo "2";

break;

default:

echo "default";

break;
}