为何 文件域内容无法显示
为什么 文件域内容无法显示？
echo $_POST[a];
?>
为什么 那个 echo $_POST[a];就是输出不了？
改为 echo $_POST[sub];却可以输出！
------解决方案--------------------
echo $_FILES["a"]["name"];
------解决方案--------------------
因为 是上传
php做了特殊处理，所以 a 就不在 $_POST 中了，而在 $_FILES 中
------解决方案--------------------
$_FILES["a"]["name"]; 就是了
你说的书上 $_POST 也不包括上传控件
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