Re: Login script login

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On p, 2007-02-02 at 12:10 +0000, Dave Carrera wrote:
> Hi Stut,
> 
> I think i have found where i am going wrong.....
> 
> Its in the comparison login for the db result.
> 
> So i select * from jfjfjfjf where custno=$_POST[number]
> 
> But now i am getting messed up with if cust no not found then all i get 
> is a blank page but hoping for an error

because you get an empty result set if no match is found
so check it like

if ($row = mysql_fetch_array($result)) {
 // ok, found
} else {
 // not found, error
}

or whatever sql you use

hope that helps
Zoltán Németh

> 
> And i dont think i am comparing the db result with the $_POST correctly
> 
> Struggling here a bit :-(
> 
> Dave C
> 
> Stut wrote:
> > Dave Carrera wrote:
> >> Hi All,
> >>
> >> Having a grey brain moment here and need some advise on the logic of 
> >> this, should be simple, login script.
> >>
> >> I am checking validity of
> >>
> >> customer number
> >> customer email
> >> customer password (md5 in mysql)
> >>
> >> So i have my form with relevant fields
> >>
> >> Now i am getting problems with either sql or how i am handling , and 
> >> showing, and errors.....
> >>
> >> I think what i am asking is this
> >>
> >> If someone just hits the login button show error "All fields must be 
> >> entered"
> >>
> >> If customer number dose not excist show relevant error
> >>
> >> If customer number ok but email not show error
> >>
> >> If customer number ok but email ok but password is not show error
> >>
> >> If all is ok set sessions, got this ok, and proceed.
> >>
> >> Any help with with this is very much appreciated.
> >>
> >> Kind Regards
> >>
> >> Dave C
> >
> > I'm not totally clear what the question was in there. Personally I 
> > keep this simple...
> >
> > <?php
> > $_POST['number'] =
> >         (isset($_POST['number']) ? trim($_POST['number']) : '');
> > $_POST['email'] =
> >         (isset($_POST['email']) ? trim($_POST['email']) : '');
> >
> > if (empty($_POST['number']) or
> >     empty($_POST['email']) or
> >     empty($_POST['password']))
> > {
> >     die('All fields must be entered');
> > }
> >
> > // Find the customer/user/whatever you need from the given details
> >
> > if (<<not found>>)
> > {
> >     die('Unable to locate customer/user/whatever');
> > }
> >
> > // Set up the session here, or however you're tracking the
> > // current customer/user/whatever
> >
> > header('Location: /somewhere_else');
> > ?>
> >
> > Hope that helps.
> >
> > -Stut
> >
> 

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