Description
bool
is_writable ( string filename)
Returns TRUE if the filename exists and is writable. The
filename argument may be a directory name allowing you to check
if a directory is writeable.
Keep in mind that PHP may be accessing the file as the user id
that the web server runs as (often 'nobody'). Safe mode
limitations are not taken into account.
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_readable().
