regular expressions question - this a bug?

[lazzerous]

look at these two if statements:

if (!ereg("^[a-zA-Z0-9\.-]", $string)

if (!ereg("^[a-zA-Z0-9-\.]", $string)

All that has changed is the placement of the dash within the range, buit the second expression errors out.

Is this a bug, or can certain special characters only appear in a range listing at the beginning or end?

This isn't a big deal, I'm just curious.

Thanks,
-=Patrick=-

[Weedpacket]

The second: a hyphen is a special character that indicates a range of characters, and "0-9-." is gibberish.
To quote from the link given on the [man]regex[/man] manual page:

http://www.tin.org/bin/man.cgi?section=7&topic=regex
It is illegal(!) for two ranges to share an endpoint, e.g. `a-c-e'.

[lazzerous]

Thnks, weed -I kinda figure'd you'd be the one to show me the light ;-)