(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. If filename is a relative filename, it will be checked relative to the current working 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 chdir(), is_file() and is_link().