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;
}
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