Resource Types
xattr Functions
xattr
PHP Manual

# Predefined Constants

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.

`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.

Resource Types
xattr Functions
xattr
PHP Manual