Question

I’m trying to make a basic user login. In the PHP page that logs the user In I’m getting errors. It works, but has errors at the top of the page. I’m using:

UPDATE:

<?php

session_start();

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

if ($username && $password)
{

    $connect = mysql_connect('hidden') or die ('could not connect');
    mysql_select_db('hidden') or die ('could not connect to the database');

    $query = mysql_query("SELECT * FROM users WHERE username = '$username'");
    $num_rows = mysql_num_rows($query);

        if ($num_rows!=0)

        {
            //code to login

            while ($row  = mysql_fetch_assoc ($query))
            {
            $dbusername = $row['username'];
            $dbpassword = $row['password'];
            }

            //check to see if username/password match

            if ($username==$dbusername && $password==$dbpassword)
            {

                echo "You're in!  <a href=\"member.php\">Click here</a> to enter the member area";
                $_SESSION['username'] = $username;

                }

                else                
                    echo "Incorrect username/password";
                    }

                    else
                        die('That user does not exist');
                        }

else
    die('Please enter a username/password');

?>

This is the error if it helps:

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/16/7554016/html/grahamcaldwell/DrumChum/login.php:6) in /home/content/16/7554016/html/grahamcaldwell/DrumChum/login.php on line 16

UPDATE

Problem solved. I had to put session_start(); before even the DOCTYPE.

Answer 1

The issue with the session is probably because of the warning about the unexpected character. Maybe that warning is causing output to be sent to the buffer which is triggering the session error.