Question

I have this quick question, i have got the username variable from a form and i need to insert it in a query, can you please tell me where i’m going wrong, it says: Unknown column ‘$username’ in ‘field list’

Here is the code:

echo $HTTP_POST_VARS['username'];

   echo $username;
   $query = sprintf( 'SELECT $username FROM hostess' );

Answer 1

Uhmm about everything seems wrong..

First of all, you never defined the variable $username.
What you are doing would only be valid in a version of PHP that still supports suberglobals.

Second, why are you using sprintf for a query?

By the way, HTTP_POST_VARS is deprecated. Use POST

Correct code would be something like this;

    $username = $_POST['username'];
echo $username;

$query = mysql_query("SELECT ".$username." FROM hostess");