Gets the file group. The group ID is returned in numerical format, use
posix_getgrgid() to resolve it to a group name.
Parameters
- filename
Path to the file.
Return Values
Returns the group ID of the file, or FALSE
in case
of an error. The group ID is returned in numerical format, use
posix_getgrgid() to resolve it to a group name.
Upon failure, FALSE
is returned.
Errors/Exceptions
Upon failure, an E_WARNING
is emitted.
Notes
Note: The results of this
function are cached. See clearstatcache() for
more details.