From 749814617084bac60ec8724b2e0d36f665ba9273 Mon Sep 17 00:00:00 2001
From: Marco Vito Moscaritolo <mavimo@gmail.com>
Date: Sat, 16 Jun 2018 21:35:18 +0200
Subject: [PATCH] Improve vat ID generated for Italy to follow the official
 rules

---
 src/Faker/Provider/it_IT/Company.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Faker/Provider/it_IT/Company.php b/src/Faker/Provider/it_IT/Company.php
index f27499a31f..6acb6daa3b 100644
--- a/src/Faker/Provider/it_IT/Company.php
+++ b/src/Faker/Provider/it_IT/Company.php
@@ -2,6 +2,8 @@
 
 namespace Faker\Provider\it_IT;
 
+use Faker\Calculator\Luhn;
+
 class Company extends \Faker\Provider\Company
 {
     protected static $formats = array(
@@ -69,6 +71,8 @@ public function bs()
      */
     public static function vatId()
     {
-        return static::numerify('IT###########');
+        $code = sprintf('%s%03d', static::numerify('#######'), static::numberBetween(1, 121));
+
+        return sprintf('IT%s%d', $code, Luhn::computeCheckDigit($code));
     }
 }