(PECL xattr >= 0.9.0)
xattr_set — Set an extended attribute
$filename
, string $name
, string $value
[, int $flags = 0
] ) : boolThis function sets the value of an extended attribute of a file.
��չ������������ ��ͬ�������ռ䣺user
�� root��user �����ռ�������û�����Ч���� root
�����ռ����ӵ�� root Ȩ���û���Ч��
xattr Ĭ���� user �����ռ��ϲ���������ʹ��
flags �������и��ġ�
filenameThe file in which we set the attribute.
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.
valueThe value of the attribute.
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. |
�ɹ�ʱ���� TRUE�� ������ʧ��ʱ���� FALSE��
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'));
?>