is_link
Safe_mode restrictions ignored means:
cant read by read() so is_readable() = false.
even if safe_mode_include_dir is set and include does works, is_readable() is false to. :(
(php5)
is_readable
(PHP 4, PHP 5)
is_readable — filename이 읽기 가능한 것인지 아닌지 이야기하기
Description
bool is_readable
( string $filename
)
filename이 존재하고 읽기 가능한 것이면 TRUE를 반환합니다
웹 서버가 자주 'nobody' 등으로 실행될 때 PHP는 파일에 접근할 때 사용자 아이디로 접근할 수가 있다는 것을 명심하세요.. 안전모드의 한계는 계정으로 받아들여지지 않는다는 것입니다.
이 함수의 실행결과는 캐시가 됩니다. 좀 더 자세한 내용을 알고 싶으면 clearstatcache() 를 보세요
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User Contributed Notesis_readable
jascha át gmx dót com
07-Nov-2006 06:58
07-Nov-2006 06:58
jo at durchholz dot org
30-Jan-2006 09:15
30-Jan-2006 09:15
DrTebi at yahoo dot com is wrong. is_readable() checks whether you can do file_get_contents() or similar calls, no more, no less. If the location given returns a 500 or 403 error, you can still read() that (you'll simply get the error page), but it's still read()able. Using is_readable to check the validity of a URL is simply the wrong function.
DrTebi at yahoo dot com
13-Oct-2005 09:22
13-Oct-2005 09:22
Be careful when using is_readable on symbolic links.
is_readable will return true if the file the symbolic link is pointing to is readable.
The problem is that if the server does NOT allow to follow symbolic links, is_readable will still return true, but e.g. redirecting to the sybolic link will not work. For Apache, make sure that at the server, virtual host configuration level, or inside a directory container you have set
Options +FollowSymLinks
As an example, let's say you have at the document root directory:
index.php -- the script using is_readable
my_linked_page.html -- a regular HTML page
my_link -- a link pointing to my_linked_page.html
Now in index.php:
<?php
if (is_readable('my_link')) {
header('Location: /my_link');
}
?>
If FollowSymLinks is forbidden, this will not work, if allowed, it will.
26-Jul-2005 07:08
Sometimes in situations where file_exists fails (returns false even though the file does exist) stat will work.
php dot 5 dot ce at spamgourmet dot com
12-Jan-2005 06:32
12-Jan-2005 06:32
If you are using ACL, watch out for Bug #30931 (now open without any reaction for about 2 month, alltough an solution exists.)