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Hi, I got this script which checks a username does not exist, before writing the users registration info to the database. It was working fine, but now for some reason says there is a duplicate username in the database, when there isnt

 

<?php


$password1 = $_POST['password1'];
$password2 = $_POST['password2'];

if ($password1 != $password2) {

echo "Your passwords did not match, please go back and register again";

} else {

// Check Passwords Match


// Get Posted Variables

$username = $_POST['username'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$address = $_POST['address'];
$town = $_POST['town'];
$county = $_POST['county'];
$postcode = $_POST['postcode'];
$email = $_POST['email'];
$approved = "no";

// MySQL Connection

include_once("data/mysql.php");

$mysqlPassword = (base64_decode($mysqlpword));

$con = mysql_connect("$localhost", "$mysqlusername", "$mysqlPassword") or die(mysql_error());
mysql_select_db("$dbname", $con) or die(mysql_error());


$query = "SELECT COUNT(*) AS count FROM members WHERE username='$username'";
$results = mysql_query($query) or die ("Error reading from database");
$existingUsername = mysql_fetch_array($results);

if ($existingUsername['count'] > 0) {
echo "I'm sorry our database already contains that username please choose a new username to continue.";
} else {
    

$sql = "INSERT INTO members (username, firstname, lastname, address, town, county, postcode, email, password, approved)
VALUES
('$_POST[username]','$_POST[firstname]','$_POST[lastname]','$_POST[address]','$_POST[town]','$_POST[county]','$_POST[postcode]','$_POST[email]','$_POST[password2]','$approved')";

mysql_query($sql,$con);

?>

<meta http-equiv="REFRESH" content="5;url=../login.html">

<?php

}

mysql_close($con);
}
?>

 

Im sure it is something simple, I just cant see what it is.

 

As always, any help is much appreciated

Link to comment
https://forums.phpfreaks.com/topic/230738-non-existent-duplicate-error/
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EDIT: What's the exact error message?  I assumed you were referring to this line:

echo "I'm sorry our database already contains that username please choose a new username to continue.";

 

Echo out $query to make sure the username you expect is actually being queried with.  If not, we would need to see your HTML form, maybe the name is different.

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