[MySQL][PHP]zapytanie w zapytaniu, co jest nie tak Opcje

[benzulli]

[PHP] pobierz, plaintext 
$polaczenie = @new mysqli($host, $db_user, $db_password, $db_name);
            if ($polaczenie->connect_errno!=0)
            {
                echo "Error: ".$polaczenie->connect_errno;
            }
            else
            {
                if($rezultat = @$polaczenie->query("SELECT * FROM wp_coins"))
                while($db_out = $rezultat->fetch_assoc())
                {
                    if(strtoupper($preg_receiver[1]) == strtoupper($char_name))
                    {
                        if($db_out['tc_id'] !=$preg_id[2])
                        {
                            $polaczenie->query("INSERT INTO wp_coins SET tc_id='$preg_id[2]', coins='$preg_amount[2]', sender='$preg_sender[1]', user='$current_user->user_login', email='$current_user->user_email', used=0");
                        }
                    }
                    if($db_out['email'] == $current_user->user_email && $db_out['coins'] == $preg_amount[2])
                    {
                        $polaczenie->query("UPDATE wp_coins SET used=1 WHERE tc_id='$preg_id[2]'");
                        return true;
                    }
                    else
                        return false;
                }
            }
            $polaczenie->close();
[PHP] pobierz, plaintext 

generuje blad
Error: 1045 Warning: mysqli::close(): Couldn't fetch mysqli
czy moglby ktos wytlumaczyc co jest nie tak?