From: Michele Locati <michele@locati.it>
Date: Wed, 29 May 2019 18:26:58 +0200
Subject: [PATCH] Fix idn_to_ascii/idn_to_utf8 deprecation warning

Fix the "INTL_IDNA_VARIANT_2003 is deprecated" warning

Co-Authored-By: Filippo Tessarotto <zoeslam@gmail.com>
Co-Authored-By: Abdul Malik Ikhsan <samsonasik@gmail.com>

--- a/src/EmailAddress.php
+++ b/src/EmailAddress.php
@@ -535,6 +535,9 @@ class EmailAddress extends AbstractValidator
     protected function idnToAscii($email)
     {
         if (extension_loaded('intl')) {
+            if (defined('INTL_IDNA_VARIANT_UTS46')) {
+                return (idn_to_ascii($email, 0, INTL_IDNA_VARIANT_UTS46) ?: $email);
+            }
             return (idn_to_ascii($email) ?: $email);
         }
         return $email;
@@ -554,6 +557,9 @@ class EmailAddress extends AbstractValidator
             // the source string in those cases.
             // But not when the source string is long enough.
             // Thus we default to source string ourselves.
+            if (defined('INTL_IDNA_VARIANT_UTS46')) {
+                return idn_to_utf8($email, 0, INTL_IDNA_VARIANT_UTS46) ?: $email;
+            }
             return idn_to_utf8($email) ?: $email;
         }
         return $email;