php man page for fileperms

FILEPERMS(3)								 1							      FILEPERMS(3)

fileperms - Gets file permissions

SYNOPSIS
       int fileperms (string  $filename)

DESCRIPTION
	Gets permissions for the given file.

PARAMETERS
	      o $filename
		- Path to the file.

RETURN VALUES
	Returns the file's permissions as a numeric mode. Lower bits of this mode are the same as the permissions expected by chmod(3), however on
       most platforms the return value will also include information on the type of file given as $filename. The examples below demonstrate how to
       test the return value for specific permissions and file types on POSIX systems, including Linux and Mac OS X.

	For  local  files,  the specific return value is that of the st_mode member of the structure returned by the C library's stat(3) function.
       Exactly which bits are set can vary from platform to platform, and looking up your specific  platform's	documentation  is  recommended	if
       parsing the non-permission bits of the return value is required.

EXAMPLES
       Example #1

	      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

       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;
	      ?>

	      The above example will output:

	      -rw-r--r--

ERRORS
/EXCEPTIONS
	Upon failure, an E_WARNING is emitted.

NOTES
       Note

	      The results of this function are cached. See clearstatcache(3) for more details.

       Tip

	      As  of  PHP  5.0.0,  this function can also be used with some URL wrappers. Refer to "Supported Protocols and Wrappers" to determine
	      which wrappers support stat(3) family of functionality.

SEE ALSO
       chmod(3), is_readable(3), stat(3).

PHP Documentation Group 													      FILEPERMS(3)