php - Throttling attempts not being recorded into database -

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hi trying create login throttling object oriented php, have created structured code can not work object oriented far heres code:

public function find_failed_login($email = null) {         if(!empty($email)) {             $query = "select * {$this->table} email = '".$this->db->escape($email)."'";             return $this->db->query($query);         }     }      public function record_failed_login($email) {              $count = 1;             $time = time();              $failed_login = $this->find_failed_login($email);             if(!$failed_login) {                 $query = "insert {$this->table} (email, count, last_time) values ('".$this->db->escape($email)."', {$count}, {$time})";                 return $this->db->query($query);             } else {                 $query = "update {$this->table} set email = '{$email}', count = count + 1, last_time = {$time}";                 return $this->db->query($query);              }      }      public function clear_failed_logins($email = null) {         if(!empty($email)) {             $failed_login = $this->find_failed_login($email);             if(isset($failed_login)) {                 $query = "delete {$this->table} email = '".$this->db->escape($email)."'";                 return $this->db->query($query);             }         }     }      public function throttle_failed_logins($email = null) {         if(!empty($email)) {              $throttle_at = 3;             $delay_in_minutes = 1;             $delay = 60 * $delay_in_minutes;              $failed_login = $this->find_failed_login($email);             if(isset($failed_login)) {                   while($failed = mysqli_fetch_assoc($failed_login)) {                      if(isset($failed) && $failed['count'] >= $throttle_at) {                         $remaining_delay = ($failed['last_time'] + $delay) - time();                         $remaining_delay_in_minutes = ceil($remaining_delay / 60);                         return $remaining_delay_in_minutes;                     } else {                         return 0;                     }                  }             }          }     }

and in login page calling this:

$objlogin = new login();  if($objform->ispost('login_email')) {          $throttle_delay = $objlogin->throttle_failed_logins($objform->getpost('login_email'));         if($throttle_delay > 0) {             $objvalid->add2errors('failed_logins');         }

when try no error or matter, dead code, appreciate professional :)


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