<?php
    $name = $_GET['name'];
    $gender = $_GET['gender'];
    $pin = $_GET['pin'];

    $isCorrectMonth = true;
    $nums = [2,4,8,5,10,9,7,3,6];
    $card = [];

    $month = (int)$pin[2].$pin[3];

    if ($month > 12) {
        if ($month - 20 >= 1 && $month - 20 <= 12) {
            $isCorrectMonth = true;
        }
        else if ($month - 40 >= 1 && $month - 40 <= 12) {
            $isCorrectMonth = true;
        }
        else {
            $isCorrectMonth = false;
        }
    }
    else if ($month <= 12 && $month >= 1) {
        $isCorrectMonth = true;
    }
    else {
        $isCorrectMonth = false;
    }

    if ($isCorrectMonth) {
        if ($pin[8] % 2 === 0) {
            $genderID = "male";
        }
        else {
            $genderID = "female";
        }
    }
    else {
        echo "<h2>Incorrect data</h2>";
        die();
    }

    if ($genderID === $gender) {
        $combo = 0;
        for ($i=0; $i < count($nums); $i++) {
            $combo += $nums[$i] * $pin[$i];
        }
        $combo = $combo % 11;
        if ($combo === 10) {
            $combo = 0;
        }
        if ($combo === (int)$pin[9]) {
            $card['name'] = $name;
            $card['gender'] = $gender;
            $card['pin'] = $pin;
            echo json_encode($card);
        }
        else {
            echo "<h2>Incorrect data</h2>";
            die();
        }
    }
    else {
        echo "<h2>Incorrect data</h2>";
        die();
    }
?>