xattr Functions

Introduktion

The xattr extension allows for the manipulation of extended attributes on a filesystem.

Systemkrav

To use xattr, you will need libattr installed. It is available at » https://oss.sgi.com/projects/xfs/.

Note: These functions only work on filesystems that support extended attributes, and have them enabled at mount time. Some common filesystems that support extended attributes are ext2, ext3, reiserfs, jfs, and xfs.

Installation

xattr is currently available through PECL » https://pecl.php.net/package/xattr.

If » PEAR is available on your *nix-like system you can use the pear installer to install the xattr extension, by the following command: pear -v install xattr.

You can always download the tar.gz package and install xattr by hand:

gunzip xattr-xxx.tgz
tar -xvf xattr-xxx.tar
cd xattr-xxx
phpize
./configure && make && make install

Foruddefinerede Konstanter

Konstanterne nedenunder er defineret af denne udvidelse, og vil kun være tilgængelige når denne udvidelse enten er blevet kompileret ind i PHP eller dynamisk indsat under runtime.

XATTR_ROOT (integer)

Set attribute in root (trusted) namespace. Requires root privileges.

XATTR_DONTFOLLOW (integer)

Do not follow the symbolic link but operate on symbolic link itself.

XATTR_CREATE (integer)

Function will fail if extended attribute already exists.

XATTR_REPLACE (integer)

Function will fail if extended attribute doesn't exist.