From 43ff1dd68d1698764ae8620fbd52b77de74254f0 Mon Sep 17 00:00:00 2001
From: "Msk, Nikita" <88129731+MicardinaFoundation@users.noreply.github.com>
Date: Sun, 30 Apr 2023 18:47:13 +0500
Subject: [PATCH] Create Luna.php

---
 Luna/Luna.php | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Luna/Luna.php

diff --git a/Luna/Luna.php b/Luna/Luna.php
new file mode 100644
index 0000000..972b109
--- /dev/null
+++ b/Luna/Luna.php
@@ -0,0 +1,35 @@
+<?php
+
+$cardNumb = readline("Введите номер карты:");
+
+$number = str_replace(' ', '', $cardNumb);
+$number = str_replace('-', '', $number);
+$number = (int) $number;
+
+$arrNumb = str_split($number);
+
+for ($i = 0; $i < 16; $i+=2) {
+    $arrNumb[$i] = $arrNumb[$i]*2;
+    if ($arrNumb[$i]>9)
+       $arrNumb[$i]-=9;
+}
+
+
+
+$answer = ["isValid" => "false", "paymentSystem" => "none"];
+
+if (array_sum($arrNumb)%10===0) {
+    $answer["isValid"] = "true";
+    if ($cardNumb[0]==4)
+       $answer["paymentSystem"] = "VISA";
+    elseif ($cardNumb[0]==5)
+       $answer["paymentSystem"] = "Mastercard";
+    elseif ($cardNumb[0]==2 and $cardNumb[1]==2 and $cardNumb[2]==0)
+       $answer["paymentSystem"] = "MIR";
+    else
+       $answer["paymentSystem"] = "UNKNOWN";
+}
+
+print_r($answer);
+
+?>