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> On Sun, Jul 12, 2009 at 00:31, Jason Carson<ja...@jasoncarson.ca> wrote:
> > Hello everyone,
> >
> > I am having a problem getting my prepared statements working. Here is my
> > setup...
> >
> > index.php -> authenticate.php -> admin.php
> >
> > 1)index.php has a login form on it so when someone enters their username
> > the form redirects to another page I call authenticate.php.
> >
> > 2)In the authenticate.php file I want to use prepared statements to
> > interact with the MySQL database. I want to compare the username submitted
> > from the form with the username in the database.
> >
> > 3)If the login username was legitimate then you are forwarded to admin.php
> >
> > Its step 2 I am having problems with. Here is what I have but I don't
> > think it makes any sense and it doesn't work.
> >
> >
> > $link = mysqli_connect($hostname, $dbusername, $password, $database);
> > $stmt = mysqli_prepare($link, "SELECT * FROM administrators WHERE
> > adminusers=?");
> > mysqli_stmt_bind_param($stmt, 's', $username);
> > $result = mysqli_stmt_execute($stmt);
> >
> > $count=mysqli_num_rows($result);
> >
> > if($count==1){
> > header("location:admin.php");
> > } else {
> > echo "Failure";
> > }
> >
> > Any help is appreciated.
The main problem is you are not testing your results. With that code
you do not even know if you have a connection or not. I'd say there is
a good chance you do not have error reporting enabled or you would have
picked up the error straight away.
mysqli_stmt_execute returns a boolean indicating success or failure.
You are trying to use it as a result set, which will not work. Replace:
$count=mysqli_num_rows($result);
with:
mysqli_stmt_store_result($stmt);
$count = mysqli_stmt_num_rows($stmt);
>
> --
> </Daniel P. Brown>
> daniel.br...@parasane.net || danbr...@php.net
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