The xattr extension allows for the manipulation of extended attributes on a filesystem.
To use xattr, you will need libattr installed. It is available
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.
xattr is currently available through PECL
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:
Example 1. xattr install by hand
tar -xvf xattr-xxx.tar
./configure && make && make install
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
Set attribute in root (trusted) namespace. Requires root privileges.
Do not follow the symbolic link but operate on symbolic link itself.
Function will fail if extended attribute already exists.
Function will fail if extended attribute doesn't exist.