From 1efac43a74100a1a22bc566f2dc4997b7304eea5 Mon Sep 17 00:00:00 2001
From: Ivan Tcholakov <ivantcholakov@gmail.com>
Date: Sun, 25 Jun 2017 09:58:03 +0300
Subject: [PATCH] Egn class: A minor correction. Signed-off-by:Ivan Tcholakov
 <ivantcholakov@gmail.com>

---
 Egn.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Egn.php b/Egn.php
index 7719d49..de43bf2 100644
--- a/Egn.php
+++ b/Egn.php
@@ -137,6 +137,12 @@ public static function valid($egn) {
 
         $egn = (string) $egn;
 
+        // Added by Ivan Tcholakov, 25-JUN-2017.
+        if (!ctype_digit($egn)) {
+            return false;
+        }
+        //
+
         if (strlen($egn) != 10) {
             return false;
         }