fileowner
There seems a little bit confusion on the last two post about how to display the fileperms like 666 or 0666.
When you have a file fileperms() returns i.e. 100666
<?php
substr(decoct(fileperms('foo.txt')), 3); # 666
substr(decoct(fileperms('foo.txt')), 2); # 0666
?>
if you have a dir fileperms() returns i.e. 40777
<?php
substr(decoct(fileperms('.')), 2); # 777
substr(decoct(fileperms('.')), 1); # 0777
?>
So both are right. Note I have currently tested this on an windows box so I dont know how the function behave under a different OS.
fileperms
(PHP 4, PHP 5)
fileperms — Gets file permissions
Descrierea
int fileperms
( string $filename
)
Gets permissions for the given file.
Parametri
- filename
-
Path to the file.
Valorile întroarse
Returns the permissions on the file, sau FALSE în cazul eşecului.
Exemple
Example #1 Display permissions as an octal value
<?php
echo substr(sprintf('%o', fileperms('/tmp')), -4);
echo substr(sprintf('%o', fileperms('/etc/passwd')), -4);
?>
Exemplul de mai sus va afişa:
1777 0644
Example #2 Display full permissions
<?php
$perms = fileperms('/etc/passwd');
if (($perms & 0xC000) == 0xC000) {
// Socket
$info = 's';
} elseif (($perms & 0xA000) == 0xA000) {
// Symbolic Link
$info = 'l';
} elseif (($perms & 0x8000) == 0x8000) {
// Regular
$info = '-';
} elseif (($perms & 0x6000) == 0x6000) {
// Block special
$info = 'b';
} elseif (($perms & 0x4000) == 0x4000) {
// Directory
$info = 'd';
} elseif (($perms & 0x2000) == 0x2000) {
// Character special
$info = 'c';
} elseif (($perms & 0x1000) == 0x1000) {
// FIFO pipe
$info = 'p';
} else {
// Unknown
$info = 'u';
}
// Owner
$info .= (($perms & 0x0100) ? 'r' : '-');
$info .= (($perms & 0x0080) ? 'w' : '-');
$info .= (($perms & 0x0040) ?
(($perms & 0x0800) ? 's' : 'x' ) :
(($perms & 0x0800) ? 'S' : '-'));
// Group
$info .= (($perms & 0x0020) ? 'r' : '-');
$info .= (($perms & 0x0010) ? 'w' : '-');
$info .= (($perms & 0x0008) ?
(($perms & 0x0400) ? 's' : 'x' ) :
(($perms & 0x0400) ? 'S' : '-'));
// World
$info .= (($perms & 0x0004) ? 'r' : '-');
$info .= (($perms & 0x0002) ? 'w' : '-');
$info .= (($perms & 0x0001) ?
(($perms & 0x0200) ? 't' : 'x' ) :
(($perms & 0x0200) ? 'T' : '-'));
echo $info;
?>
Exemplul de mai sus va afişa:
-rw-r--r--
Note
Notă: Rezultatele acestei funcţii sunt stocate în cache. Accesaţi clearstatcache() pentru mai multe detalii.
Sfat
Începând cu PHP 5.0.0 această funcţie poate fi utilizată de asemenea cu unele învelişuri URL. Referiţi-vă la List of Supported Protocols/Wrappers pentru lista învelişurilor care susţin familia de funcţionalitate stat().
Vedeţi de asemenea
- chmod() - Changes file mode
- is_readable() - Tells whether a file exists and is readable
- stat() - Gives information about a file
add a note
User Contributed Notesfileperms
meecrob at k42b3 dot com
27-Aug-2009 02:02
27-Aug-2009 02:02
jchris dot fillionr at kitware dot com
02-Apr-2009 10:11
02-Apr-2009 10:11
Since the output of decoct( fileperms('.') ) is of the form: 40644
It seems the previous example is wrong, instead you should understand:
To get permissions formatted as "644":
<?php
echo substr(decoct( fileperms('.') ), 2);
?>
To get permissions formatted as "0644":
<?php
echo substr(decoct( fileperms('.') ), 1);
?>
MartinAngermeier at gmx dot net
29-Oct-2008 08:37
29-Oct-2008 08:37
An easy way to calculate fileperms to chmod is this:
substr(decoct(fileperms("test.html")),3);
Displays 666 or 777 (depends on chmod set).
substr(decoct(fileperms("test.html")),2);
Displays 0666 or 0777 and refers immediately to the number set with chmod();
eelco
10-Jul-2007 09:21
10-Jul-2007 09:21
If you only want the permissions (lowest three octal numbers) you can use a bitwise AND to mask the bits:
<?php
fileperms($file) & 511;
?>
paul2712 at gmail dot com
02-Jun-2007 04:08
02-Jun-2007 04:08
Do not forget: clearstatcache();
==============================
When ever you make a:
mkdir($dstdir, 0770 ))
or a:
chmod($dstdir, 0774 );
You have to call:
clearstatcache();
before you can call:
fileperms($dstdir);
chinello at gmail dot com
25-Apr-2007 04:43
25-Apr-2007 04:43
On Linux (not tested on Windows), if you want a chmod-like permissions, you can use this function:
<?php
function file_perms($file, $octal = false)
{
if(!file_exists($file)) return false;
$perms = fileperms($file);
$cut = $octal ? 2 : 3;
return substr(decoct($perms), $cut);
}
?>
Using it:
$ touch foo.bar
$ chmod 0754 foo.bar
<?php
echo file_perms('foo.bar'); // prints: 754
echo file_perms('foo.bar', true); // prints 0754
?>