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XXXVIII. Fileinfo Functions
The functions in this module try to guess the content type
and encoding of a file by looking for certain
magic byte sequences at specific
positions within the file. While this is not a bullet proof
approach the heuristics used do a very good job.
magic_open library is needed to build this extension.
A short installation note: just type
in your console.
Данное расширение не определяет никакие директивы конфигурации в php.ini.
There is one resource used in Fileinfo extension: a magic database
descriptor returned by finfo_open().
Перечисленные ниже константы определены данным расширением и могут быть
доступны только в том случае, если PHP был собран с
поддержкой этого расширения или же в том случае, если
данное расширение подгружается во время выполнения.
- FILEINFO_NONE
(integer)
No special handling.
- FILEINFO_SYMLINK
(integer)
Follow symlinks.
- FILEINFO_MIME
(integer)
Return a mime string, instead of a textual description.
- FILEINFO_COMPRESS
(integer)
Decompress compressed files.
- FILEINFO_DEVICES
(integer)
Look at the contents of blocks or character special devices.
- FILEINFO_CONTINUE
(integer)
Return all matches, not just the first.
- FILEINFO_PRESERVE_ATIME
(integer)
If possible preserve the original access time.
- FILEINFO_RAW
(integer)
Don't translate unprintable characters to a \ooo octal
representation.
 add a note
User Contributed Notes
Fileinfo Functions
Johny
30-Oct-2007 11:39
Here is a mistake:
No:
----
pear install fileinfo
----
but
----
pecl install fileinfo
----
DanielWalker at ncfe dot org dot uk
30-Oct-2007 09:32
Using the Unix 'file' program with the -i switch will not work reliably.
Consider the following plain-text CSV file (we'll call it 'error.csv'), which has the contents:
GIFT,WRAPPED,ERRORS,ON,LOOKING,At,FILES
...just that one line: nothing above it, nothing below.
Now, what does asking:
file -i error.csv
...give us for this file? Yes, that's right -
'error.csv: image/gif'
Why? Because the first line starts 'GIF...', that's why. You cannot trust file.
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".
bujuzu A~T gmail.com
15-Jun-2007 10:22
If, like I was, you are looking for a quick and easy way to grab a mime type on a file, and don't feel like fiddling around with extentions or pear or any of that, a unix native 'file -i' command will usually do the trick - that is, if you are able to use shell commands.
mwwaygoo AT hotmail DOT com
07-Jun-2007 06:25
Be careful of using system("file -i -b file.pdf");
I got some strange results as follows:-
1.
<?php
$type=system("file -i -b mime.php");
echo $type;
?>
text/plain; charset=us-ascii
text/plain; charset=us-ascii
2.
<?php
$type=system("file -i -b mime.php");
echo $type."<br/>\n";
$split=split(";",$type);
print_r($split);
$type=trim($split[0]);
echo $type;
?>
text/plain; charset=us-ascii
text/plain; charset=us-ascii<br/>
Array
(
[0] => text/plain
[1] => charset=us-ascii
)
text/plain
3.
<?php
$type=@system("file -i -b mime.php");
$split=split(";",$type);
print_r($split);
$type=trim($split[0]);
echo $type;
?>
text/x-c++; charset=us-ascii
Array
(
[0] => text/x-c++
[1] => charset=us-ascii
)
text/x-c++
aidan at php dot net
15-Mar-2007 01:54
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.
deanariel at gmail dot com
13-Apr-2006 11:16
Sometime "pear install fileinfo" won't work....
so you can try "pear install pecl/fileinfo"
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fdf_set_version
