Troubles with queries

[pachoofoosh]

I've been trying to code an anti brute-force function, however without success. I can't seem to get the queries to execute correctly, and the page is returning the error "Database error 1054 - Unknown column '0' in 'field list'". Does anyone have an idea of how to make the queries execute correctly? Any help is greatly appreciated! I hope to post the code as a mod for 1.3.3 once everything works correctly. ^^

Here's the function:

PHP Code:

function logAttempt($attempts, $ip, $delay_time) {
                        $mysidia = Registry::get("mysidia");
                        $ip = $_SERVER['REMOTE_ADDR'];
                    $attempts = $mysidia->db->select("login_attempts", array("num_attempts"), "ip = '{$ip}'");
                    $newattempts = $attempts->rowCount() + 1;
                    $now = time();
                    $stmt = $mysidia->db->insert("login_attempts", array("num_attempts", "ip", "delay_time"), "VALUES ('$newattempts', '$ip', '$now')");
                      if( $newattempts <= 4 ) {
                          $delay_time = 0;
                      }
                      elseif( $newattempts == 5 || $newattempts == 6 ) {
                          $delay_time = 5;
                      }
                      elseif( $newattempts == 7 ) {
                          $delay_time = 10;
                      }
                      elseif( $newattempts == 8 ) {
                          $delay_time = 30;
                      }
                      elseif( $newattempts == 9 ) {
                          $delay_time = 60;
                      }
                      elseif( $newattempts >= 10 ) {
                          $delay_time = 120;
                      } else { echo 'We\'re sorry, but there\'s been a serious error...'; } // A wild error appears!
                                   return $delay_time;      } // End logAttempt function.