PHP上传权限问题 [英] PHP upload permission problem
问题描述
mysite $ ls -l
drwxrwxrwx 2个用户用户4096 2010-09-24 13:07上传
但是因为我没有以root身份登录，上传到域的新文件保存在上传/目录中，并具有限制权限，不能修改。例如。
upload $ ls -l
-rw-r - r-- 1 www-data www-data 3067 2010-09-24 13:07 Readme.txt
这个问题显然与所有添加的文件相同到全球用户的上传文件夹。一旦文件上传，我需要一种方法来更改文件权限，而不需要将root密码嵌入到在域中运行的php脚本。请帮助！
是否有任何方法将相同的权限关联到包含文件夹的文件添加新文件？
提交表单：
< html>
< body>
< form action =upload_file.phpmethod =post
enctype =multipart / form-data>
< label for =file>文件名：< / label>
< input type =filename =fileid =file/>
< br />
< input type =submitname =submitvalue =Submit/>
< / form>
< / body>
< / html>
upload_file.php：
if（$ _FILES [file] [error]> 0）
{
echo返回码：。 $ _FILES [file] [error]。 < br />;
}
else
{
echoUpload：。 $ _FILES [file] [name]。 < br />;
回显类型：。 $ _FILES [file] [type]。 < br />;
回声大小：。 （$ _FILES [file] [size] / 1024）。 Kb< br />;
回显临时文件：。 $ _FILES [file] [tmp_name]。 < br />;
$ b $ if（file_exists（/ home / user / mysite / upload /。$ _FILES [file] [name]））
{
echo $ _FILES [文件名] 。 已经存在。 ;
$ $ b $ move_uploaded_file（$ _ FILES [file] [tmp_name]，
/ home / user / mysite / upload /。 $ _FILES [ 文件] [ 名称]）;
回声存储在：。 上传/。 $ _FILES [ 文件] [ 名称];
echoInvalid file;
}
？>
最初将文件写入 / upload目录，是启动运行PHP模块的Apache实例的目录。换句话说，PHP是所有上传文件的所有者，通过PHP脚本，您可以更改所有相关上传文件的权限，而不必提供任何凭据：
<$ p $ （$ _ $ FILES [file] [tmp_name]，
$ f =/ home / user / mysite / upload / 。$ _FILES [file] [name]）;
chmod（$ f，0777）;
回声存储在：。 上传/。 $ _FILES [ 文件] [ 名称];
}
right guys ive ran into a problem with file permissions with the following upload form. a text file is passed to the upload/ dir by global users.
mysite$ ls -l
drwxrwxrwx 2 user user 4096 2010-09-24 13:07 upload
but as I am not logged in as root, the new file uploaded to the domain saved itself in the upload/ dir with limiting permissions and cannot be modified. eg.
upload$ ls -l
-rw-r--r-- 1 www-data www-data 3067 2010-09-24 13:07 Readme.txt
this problem is obviously the same for all files added to the upload folder by global users. once the file is uploaded I need a way of changing the file rights without embedding the root password into a php script running on the domain. please help!
is there any way to associate the same rights to files as the containing folder when new files are added?
submit form:
<html>
<body>
<form action="upload_file.php" method="post"
enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<br />
<input type="submit" name="submit" value="Submit" />
</form>
</body>
</html>
upload_file.php:
<?php
if ($_FILES["file"]["type"] == "text/plain")
{
if ($_FILES["file"]["error"] > 0)
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
}
else
{
echo "Upload: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . "<br />";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";
if (file_exists("/home/user/mysite/upload/" . $_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " already exists. ";
}
else
{
move_uploaded_file($_FILES["file"]["tmp_name"],
"/home/user/mysite/upload/" . $_FILES["file"]["name"]);
echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
}
}
}
else
{
echo "Invalid file";
}
?>
The user, that initially writes the files into your "/upload" directory, is the one that started the Apache instance running a PHP module.
In other words, PHP is the "owner" of all uploaded files and through a PHP script you can change the permissions of all relevant uploaded files without providing any credentials at all:
A quick and dirty hack to make uploaded files writable to all users would be
else
{
move_uploaded_file($_FILES["file"]["tmp_name"],
$f="/home/user/mysite/upload/" . $_FILES["file"]["name"]);
chmod($f, 0777);
echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
}
这篇关于PHP上传权限问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
