php man page for xattr_set

XATTR_SET(3)								 1							      XATTR_SET(3)

xattr_set - Set an extended attribute

SYNOPSIS
       bool xattr_set (string  $filename, string  $name, string  $value, [int  $flags])

DESCRIPTION
	This function sets the value of an extended attribute of a file.

       Extended attributes have two different namespaces: user and root. The user namespace is available to all users, while the root namespace is
       available only to users with root privileges. xattr operates on the user namespace by default, but this can  be	changed  with  the  $flags
       parameter.

PARAMETERS
	      o $filename
		- The file in which we set the attribute.

	      o $name
		-  The	name  of  the extended attribute. This attribute will be created if it doesn't exist or replaced otherwise. You can change
		this behaviour by using the $flags parameter.

	      o $value
		- The value of the attribute.

	      o $flags
		-

	      Supported xattr flags

	      +-----------------+---------------------------------------------------+
	      | 		|						    |
	      |  XATTR_CREATE	|						    |
	      | 		|						    |
	      | 		| Function will fail if extended attribute  already |
	      | 		| exists.					    |
	      | 		|						    |
	      | 		|						    |
	      | XATTR_REPLACE	|						    |
	      | 		|						    |
	      | 		| Function  will fail if extended attribute doesn't |
	      | 		| exist.					    |
	      | 		|						    |
	      | 		|						    |
	      |XATTR_DONTFOLLOW |						    |
	      | 		|						    |
	      | 		| Do not follow the symbolic link  but	operate  on |
	      | 		| symbolic link itself. 			    |
	      | 		|						    |
	      | 		|						    |
	      |   XATTR_ROOT	|						    |
	      | 		|						    |
	      | 		| Set	attribute   in	root  (trusted)  namespace. |
	      | 		| Requires root privileges.			    |
	      | 		|						    |
	      +-----------------+---------------------------------------------------+
RETURN VALUES
	Returns TRUE on success or FALSE on failure.

EXAMPLES
       Example #1

	      Sets extended attributes on .wav file

	      <?php
	      $file = 'my_favourite_song.wav';
	      xattr_set($file, 'Artist', 'Someone');
	      xattr_set($file, 'My ranking', 'Good');
	      xattr_set($file, 'Listen count', '34');

	      /* ... other code ... */

	      printf("You've played this song %d times", xattr_get($file, 'Listen count'));
	      ?>

SEE ALSO
       xattr_get(3), xattr_remove(3).

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