first upload all files

Modules/Currency/Currency.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace Modules\Currency;
+
+class Currency
+{
+    /**
+     * Path of the resource.
+     *
+     * @var string
+     */
+    const RESOURCE_PATH = __DIR__ . '/Resources/currencies.php';
+
+    /**
+     * Array of all currencies.
+     *
+     * @var array
+     */
+    private static $currencies;
+
+    /**
+     * Get all currencies.
+     *
+     * @return array
+     */
+    public static function all()
+    {
+        if (is_null(self::$currencies)) {
+            self::$currencies = require self::RESOURCE_PATH;
+        }
+
+        return self::$currencies;
+    }
+
+    /**
+     * Get all currency codes.
+     *
+     * @return array
+     */
+    public static function codes()
+    {
+        return array_keys(self::all());
+    }
+
+    /**
+     * Get all currency names.
+     *
+     * @return array
+     */
+    public static function names()
+    {
+        return array_map(function ($currency) {
+            return $currency['name'];
+        }, self::all());
+    }
+
+    /**
+     * Get name of the give currency code.
+     *
+     * @param string $code
+     * @return string
+     */
+    public static function name($code)
+    {
+        return array_get(self::all(), "{$code}.name");
+    }
+
+    /**
+     * Get subunit for the given currency code.
+     *
+     * @param string $code
+     * @return int
+     */
+    public static function subunit($code)
+    {
+        return array_get(self::all(), "{$code}.subunit");
+    }
+}