fdf_set_version
'Failed to load magic database at...'
This error message may be caused by incompatibilities between library and database. Check your database by trying to compile it with file command, like this:
cd /etc/magic
file -C -m magic
file -C -m magic.mime
b.
XXXVIII. Fileinfo 関数
導入
このモジュールの関数は、ファイル内の特定の位置から magic バイトシーケンスを見つけることで、 ファイルの content type とエンコーディングを推測します。 これは完全な手法ではありませんが、経験上かなりうまく動作しています。
要件
この拡張モジュールをビルドするには magic_open ライブラリが必要です。
実行時設定
設定ディレクティブは定義されていません。
リソース型
Fileinfo 拡張モジュールでは、一種類のリソースが使用されています。 それは、finfo_open() が返す magic データベース記述子です。
定義済み定数
以下の定数が定義されています。 この関数の拡張モジュールが PHP 組み込みでコンパイルされているか、 実行時に動的にロードされている場合のみ使用可能です。
- FILEINFO_NONE (integer)
特別な処理を行いません。
- FILEINFO_SYMLINK (integer)
シンボリックリンクのリンク先をたどります。
- FILEINFO_MIME (integer)
テキスト表現ではなく、mime 文字列を返します。
- FILEINFO_COMPRESS (integer)
圧縮されたファイルを伸張します。
- FILEINFO_DEVICES (integer)
ブロックデバイスあるいはキャラクタデバイスの内容を探します。
- FILEINFO_CONTINUE (integer)
最初に見つかったものだけでなく、一致するものをすべて返します。
- FILEINFO_PRESERVE_ATIME (integer)
可能な限り、元の最終アクセス時刻を保持します。
- FILEINFO_RAW (integer)
表示できない文字を \ooo 形式の 8 進表現に変換しません。
- 目次
- finfo_buffer -- 文字列バッファの情報を返す
- finfo_close -- fileinfo リソースを閉じる
- finfo_file -- ファイルについての情報を返す
- finfo_open -- 新しい fileinfo リソースを作成する
- finfo_set_flags -- libmagic のオプションを設定する
add a note
User Contributed Notes
Fileinfo 関数
bostjan at a2o dot si
09-Nov-2010 05:58
nessi at nessi dot ch
01-Jan-2010 04:26
For opensuse, you will just need to install the file-devel to solve the Problem with
checking for magic files in default path... not found
configure: error: Please reinstall the libmagic distribution
zypper install file-devel
aidan at php dot net
20-Dec-2008 01:09
As of PHP 5.3, Fileinfo is shipped with the main distribution and enabled by default. The extension is no longer maintained in PECL.
Evermorian
26-Aug-2008 05:03
In response to the suggestion from "jon at cybus" below to symlink /usr/share/file/magic to /etc/magic.mime, note that this causes other problems (in Debian Etch, anyway). It breaks the -i functionality of the file command, causing it to return the human-readable string instead of the MIME type. It also results in finfo doing the same.
So, it is probably better to actually specify the path to the magic file correctly when instantiating your finfo object:
<?php
$fi = new finfo(FILEINFO_MIME,'/usr/share/file/magic');
$mime_type = $fi->buffer(file_get_contents($file));
?>
Of course, you still end up with something that cannot tell the difference between a Word document and an Excel spreadsheet.
Terren Suydam
20-Jun-2008 11:00
If finfo_file() returns a mime type that also includes a character set definition (separated by a semi-colon), like:
text/plain; charset=us-ascii
Then you'll probably want to leave the charset definition in with the mime type, particularly if you're using the resulting string in an HTTP Content-Length header. The HTTP standard specifically allows for this, see:
http://www.w3.org/International/O-HTTP-charset
It seemed as if some of the previous commenters were trying to remove the charset.
tom at bitworks dot de
23-Nov-2007 08:35
It sometimes seams to be already helpful, simply to ask if the file contains the character NUL (ord == 0).
No normal textfile will contain an ASCII NUL, thus containing one or even perhaps more of them, it might be an executable or a picture file.
To identify picture types files php provides the function getimagesize()
Paul
08-Nov-2007 08:12
The results of this function seem to be of dubious quality.
eg
1) a Word doc returns:
'application/msword application/msword'
...ok not too bad, but why does it come back twice?
2) a PHP file comes back as:
'text/x-c++; charset=us-ascii'
My test file started with '<?php' so not ambiguous really. And where does it get the charset assumption from?
3) a text doc that starts with the letters 'GIF' comes back as:
'image/gif'
(just like in DanielWalker's example for the unix 'file' command)
I had better results using the PEAR 'MIME_Type' package. It gave proper answers for 1 & 3 and identified the PHP file as 'text/plain' which is probably better than a false match for C++
Both finfo_file and MIME_Type correctly identified my other two test files which were a windows exe renamed with .doc extension, and a PDF also renamed with .doc extension.
bob at bradley dot com
07-Oct-2007 01:56
This is the most impossible module to get functioning. There's about zero way to get it to function on OS X, and it's supposed to be the de facto way to pull mime types and other file info?
Seriously, the whole thing and all dependencies need to be bundled with PHP.
jon at cybus dot co dot uk
04-Sep-2007 07:58
To get v1.0.4 working on my Ubuntu Feisty system, I had to do the following. It's probably the same on Debian.
* apt-get install libmagic1-dev
* pecl install Fileinfo
* Add "extension=fileinfo.so" to php.ini (/etc/php5/{cli,cgi}/php.ini)
* ln -s /usr/share/file/magic /etc/magic.mime
hari_1983 at yahoo dot com
22-Aug-2007 10:45
Actually for RPM users file-devel contains whatever libmagic contains. then apart from pear, u can directly use "pecl install Fileinfo".
aidan at php dot net
15-Mar-2007 12:54
PHP Warning: finfo::finfo(): Failed to load magic database at '/etc/magic'
PHP Warning: finfo::file(): The invalid fileinfo object
These errors can be rectified by copying your magic database (depending on your distro, this file can be anywhere, on debian it's in /usr/share/file/magic) to /etc/magic.mime
libmagic automatically appends the .mime to the end of the filename, so PHP incorrectly reports the path it was looking for.
The same applies for:
PHP Warning: finfo::finfo(): Failed to load magic database at '/etc/magic.mime'
Unfortunately users will have to call the magic file /etc/magic.mime.mime in this case.
Alexey
18-Feb-2007 06:39
Well, it is hard to install and use this extension. There is better alternative - use lunux comand "file". For insturctions - "man file" from linux shell.
<?
echo system("file -i -b file.pdf");
?>
application/pdf
szotsaki at gmail dot com
01-Feb-2007 11:12
I am about to write how installed this package.
First of all, I tried with "pear install fileinfo" - as the manual says.
But the pear command said that 'Package "Fileinfo" is not valid,
install failed'.
Then the "pear install pecl/fileinfo" was a better way. But at that time the "phpize" command was missing.
I installed that (on openSUSE distributions it is in the php5-devel, but I think you can find it in your distro's corresponding php-devel package).
After that you may install "re2c" (I did). It's homepage is: http://sourceforge.net/projects/re2c
Copy the magic file of Apache (usually in /etc/apache2) into the following directory: /usr/locale/share/file/ or /usr/share/file/
Then you have to install "libmagic-dev". If you have Debian based system you can simply install it with apt.
But if you have an rpm based system (like me), you have to download the following package: http://packages.debian.org/unstable/libdevel/libmagic-dev
It contains the files we need.
So, download the file, browse it with Midnight Commander (mc) (you have to apt and dpkg be installed) and simply extract (so copy) the /usr folder (it is inside the CONTENTS folder) of the .deb package to the root folder.
And now give the "pear install pecl/fileinfo" command another try :)
Ps: Don't forget to check whether the script has wrote the following line into the php.ini (on openSUSE: /etc/php5/apache2): extension=fileinfo.so
I hope, I could help.
motin at demomusic dot nu
09-Jan-2007 05:34
I had a real headache trying to install this package through pear/pecl. Ran into what looks like this bug: http://pecl.php.net/bugs/bug.php?id=7673 (phpize fails)
I found downloading the package manually and running ./configure helped show what the problem is:
...
checking for fileinfo support... yes, shared
checking for magic files in default path... not found
configure: error: Please reinstall the libmagic distribution
<quit>
I though this was because of a missing magic-database like magic.mime but examining the configure-script, magic.h is searched for.
Problem for me was that include/magic.h was not found. After some googling about where to find magic.h led me to the dead
simple solution:
apt-get install libmagic-dev
This does NOT solve the original installation bug strangely enough, but allows for manual installation:
1. Find the url to the latest version of fileinfo from http://pecl.php.net/package/Fileinfo (atm: http://pecl.php.net/get/Fileinfo-1.0.4.tgz)
2. Download, compile and install
wget http://pecl.php.net/get/Fileinfo-1.0.4.tgz
gunzip Fileinfo-1.0.4.tgz
tar -xvf Fileinfo-1.0.4.tar
cd fileinfo-1.0.4
./configure
make
make install
3. Add extension=fileinfo.so in your php.ini file
4. Restart Apache
jausions at php dot net
08-Jul-2006 12:26
For Windows users:
1. Go to http://pecl4win.php.net/ to get the php_fileinfo.dll if your PHP installation didn't come with it, and you haven't installed the Extensions package.
2. Then make sure you have extension=php_fileinfo.dll somewhere in your php.ini
3. Restart your web server.