$sex = $this->checkSex(substr($number, 0, 1)); $date_of_birth = $this->checkBirthDate(substr($number, 5, 2), substr($number, 3, 2), substr($number, 1, 2)); $text = "Person is: {$sex} in {$date_of_birth} \n"; echo $text; } function checkSex($number) { if ($number < 5) { if ($number % 2) { return 'Male born in Hungary'; } else { return 'Female born in Hungary'; } } else { if ($number % 2) { return 'Male born outside of Hungary'; } else { return 'Female born outside of Hungary'; } } } function checkBirthDate($day, $month, $year) { return "{$day}-{$month}-{$year}"; } } $query = "SELECT * FROM `numbers`"; $all_data = $mysqli->query($query); $record = new Records(); $record->checkCountry($all_data);