(PHP 3, PHP 4 >= 4.0.0)

is_dir -- Tells whether the filename is a directory


bool is_dir (string filename)

Returns TRUE if the filename exists and is a directory.

The results of this function are cached. See clearstatcache() for more details.

This function will not work on remote files; the file to be examined must be accessible via the server's filesystem.

See also is_file() and is_link().