php文件服务实现虚拟挂载其他目录示例-PHP源码

php文件服务实现虚拟挂载其他目录

代码如下:

function base64url_encode($data) {
return rtrim(strtr(base64_encode($data), &＃39;+/&＃39;, &＃39;-_&＃39;), &＃39;=&＃39;);
}
function base64url_decode($data) {
return base64_decode(str_pad(strtr($data, &＃39;-_&＃39;, &＃39;+/&＃39;), strlen($data) % 4, &＃39;=&＃39;, STR_PAD_RIGHT));
}
function array_verify($var)
{
return isset($var)&&is_array($var) && count($var)>0;
}
function format_file_size($var)
{
if($var<1024) return $var.&＃39; B&＃39;;
if($var<1048576) return ($var/1024.0).&＃39; K&＃39;;
if($var<1073741824) return ($var/1048576.0).&＃39; M&＃39;;
return ($var/1073741824.0).&＃39; G&＃39;;
}

$dir="F:";//不以/结尾
$path="";

if(array_verify($_GET)&&isset($_GET["path"]))
{
$path=base64url_decode($_GET["path"]);
preg_match("#^[^/].*$|^.*\.$|^\..*$|\./\.|/\.|\./#",$path,$temp);
if(array_verify($temp))
{
echo
&＃39;


&＃39;;
echo "警告 index.php?path=".$_GET["path"]." 非法url
";
exit;
}
$path=preg_replace("#[/\/]{2,}#","/",$path);
}

if(is_dir($dir.$path))
{
echo &＃39;


&＃39;;
echo "目录 ".$path."

";

$dir_res=opendir($dir.$path);
while($filen=readdir($dir_res))
{
if($filen!=&＃39;.&＃39;&&$filen!=&＃39;..&＃39;)
{
if(is_file($dir.$path.&＃39;/&＃39;.$filen))
{
echo &＃39;&＃39;.$filen.&＃39; (&＃39;.format_file_size(filesize($dir.$path.&＃39;/&＃39;.$filen)).")
\n";
}else
{
echo &＃39;&＃39;.$filen."
\n";
}

}else if($filen==&＃39;..&＃39;)
{
preg_match("#([^/]+/{1})*[^/]+(?=/)#",$path,$parent);
if(array_verify($parent))
{
echo &＃39;&＃39;.$filen."
\n";
}else
{
echo &＃39;&＃39;.$filen."
\n";
}
}
}
echo &＃39;
&＃39;;
}
else if(is_file($dir.$path))
{
$file_size = filesize($dir.$path);
header("Content-type: application/octet-stream");
header("Accept-Ranges: bytes");
header("Accept-Length: ".$file_size);
Header("Content-Disposition: attachment; filename=".basename($dir.$path));
readfile($dir.$path);//大文件请选择其他方式
}else
echo "警告:非法访问!";

?>