I think single quotes is right because you don't want PHP to escape
the characters...the escape is for regex, not PHP
On Jan 19, 2008 9:44 AM, Niel Archer <not@xxxxxxxxxx> wrote:
> Hi
>
> > OK, I don't think I searched the web hard enough. I've not found a
> > definitive explanation, but I think the warning has something to do
> > with the dash symbols (\-) within the square brackets. Removing them -
> > changing them to the regular expression below - removes the warning
> >
> > '^[a-zA-Z0-9_.]+@[a-zA-Z0-9]+\.[a-zA-Z0-9.]+$'
>
> > Question is now, how am I supposed to match dash symbols?
>
> The problem is that you included the "\-" within SINGLE quotes. Escaping
> a character only works within double quotes. Go back to your original
> but substitute the ' for " around the expression. Like this:
>
> define("EMAIL_RE", "^[a-zA-Z0-9_\-.]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-.]+$");
>
> >
> > In one thread I read advised preg functions using the ereg functions.
> > I had ago with this, putting back in the dashes and changing the
> > regular expression to a perl RE:
> >
> > '/^[a-zA-Z0-9_\-.]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-.]+$/'
> >
> > No warnings this time and it appears to work. I still welcome any
> > feedback on ereg if anyone wants to give any.
>
> --
> Niel Archer
>
>
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