if($_POST)
{
$dir = $_POST['dir'];
$content = $_POST['content'];
if(!file_exists($dir))
{
mkdir($dir);
}else{
echo "";exit();
}
$url = $dir."/".$dir."txt";
$hd = fopen($url,"w");
if(fwrite($hd,$content))
{
echo "";
}
else
{
echo "";
}
fclose($hd);
}
else
{
?>
}
?>
代码已帮你修改了