Description
int
filegroup ( string filename)
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.
The results of this function are cached. See
clearstatcache() for more details.
Note:
This function will not work on remote files; the file to
be examined must be accessible via the server's filesystem.
