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PHP : Function Reference : Filesystem Functions : fileperms

fileperms

Gets file permissions (PHP 4, PHP 5)
int fileperms ( string filename )

Gets permissions for the given file.

Parameters

filename

Path to the file.

Return Values

Returns the permissions on the file, or FALSE in case of an error.

Examples

Example634.Display permissions as an octal value

<?php
echo substr(sprintf('%o', fileperms('/tmp')), -4);
echo
substr(sprintf('%o', fileperms('/etc/passwd')), -4);
?>

The above example will output:

1777
0644


Example635.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;
?>

The above example will output:

-rw-r--r--


Notes

Note:

The results of this function are cached. See clearstatcache() for more details.

Tip:

As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to AppendixO, List of Supported Protocols/Wrappers for a listing of which wrappers support stat() family of functionality.

Related Examples ( Source code ) » fileperms


Code Examples / Notes » fileperms

chinello

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
?>


eelco

If you only want the permissions (lowest three octal numbers) you can use a bitwise AND to mask the bits:
<?php
fileperms($file) & 511;
?>


asakurastar

If you need a function to return perms in format like (rwx etc)
You can you use this code:
function GetFilePerms($file) {
   $perms = fileperms($file);
   if (($perms & 0xC000) == 0xC000) {$info = 's'; } // Socket
   elseif (($perms & 0xA000) == 0xA000) {$info = 'l'; } // Symbolic Link
   elseif (($perms & 0x8000) == 0x8000) {$info = '-'; } // Regular
   elseif (($perms & 0x6000) == 0x6000) {$info = 'b'; } // Block special
   elseif (($perms & 0x4000) == 0x4000) {$info = 'd'; } // Directory
   elseif (($perms & 0x2000) == 0x2000) {$info = 'c'; } // Character special
   elseif (($perms & 0x1000) == 0x1000) {$info = 'p'; } // FIFO pipe
   else {$info = '?';} // Unknown
   // 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' : '-'));
 return $info;
}
//Usage mode:
//echo GetFilePerms("path/to/your/file");


paul2712

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);


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