Matching a filename

[Fran Garcia]

I wanna match the incorrect filename with the next regular expression
but it doesn´t work. Why? I don´t know.

if (ereg("[^A-Za-z0-9\.]+", $str))
return false;
else
return true;

I wanna allow only letters (A-Za-z) and numbers (0-9) and of course a
dot for the extension.

Have anybody any suggestion or idea? Any idea would be appreciated!!
Fran García

[Tim Van Wassenhove]

On 2005-02-25, Fran Garcia <fg*****@ua.es> wrote:

I wanna match the incorrect filename with the next regular expression
but it doesn´t work. Why? I don´t know.

if (ereg("[^A-Za-z0-9\.]+", $str))
return false;
else
return true;

return preg_match("#^[A-Za-z0-9\.]+$#", $str)

but what about $string = "C:\\My Documents" ?


--
Met vriendelijke groeten,
Tim Van Wassenhove <http://www.timvw.info>

[Chung Leong]

"Tim Van Wassenhove" <ti***@users.sourceforge.net> wrote in message
news:38*************@individual.net...

On 2005-02-25, Fran Garcia <fg*****@ua.es> wrote:

I wanna match the incorrect filename with the next regular expression
but it doesn´t work. Why? I don´t know.

if (ereg("[^A-Za-z0-9\.]+", $str))
return false;
else
return true;

return preg_match("#^[A-Za-z0-9\.]+$#", $str)

but what about $string = "C:\\My Documents" ?

preg_match('/^[\w\.]+$/', $str) is more compact; covers the underscore as
well.