Phpass Bool Returns False

[devilsvein]

Making a login page and using phpass.

 

if( $page_mode == 'Login' )
{
require "globe.php"; //db connect
   $username = htmlentities($_POST['username']);
   $username = mysqli_real_escape_string($mysqli, $username);
   $password = $_POST['password'];
   $query = mysqli_query($mysqli, "SELECT * FROM Persons WHERE Username = '$username'");
   $row = mysqli_fetch_assoc($query);
   $numrows = mysqli_num_rows($query);
   $dbuser = $row['Username'];
   $hash_cost_log2 = 8;
   $hash_portable = FALSE;
   $hasher = new PasswordHash($hash_cost_log2, $hash_portable);





   if( ($username == '') || ($password == '') ) {
       $error_string .= '<font color=red>You have left either the username or password field blank!</font>';
       }
   else if ($numrows == 1)
   {
    if ($dbuser == $username)
       {
       if ($hasher->CheckPassword($password, $hash)) 
       { //$hash is the hash retrieved from the DB 
    $error_string .= '<font color=red>so far so good!</font>';
}
else 
{
    $error_string .= '<font color=red>Please enter a valid username and password</font>';
}
       }
   }
   else 
   {
           $error_string .= '<font color=red>No username can be found! (2)</font>';

   }
}

 

 

if ($hasher->CheckPassword($password, $hash))

keeps returning false. therefore not authetinticating the password. Does anyone know why this is