From e2b12332693c60be6c9954de5f3d7b5fe91d0423 Mon Sep 17 00:00:00 2001
From: David Goodwin <david@palepurple.co.uk>
Date: Sat, 10 Feb 2018 20:56:56 +0000
Subject: [PATCH] Use filter_var($x, FILTER_VALIDATE_EMAIL) as an extra check
 if we can in check_email(...)

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

diff --git a/functions.inc.php b/functions.inc.php
index 150f0e13..cb950bfc 100644
--- a/functions.inc.php
+++ b/functions.inc.php
@@ -277,6 +277,12 @@ function check_email($email) {
         return Config::lang_f('pInvalidMailRegex', $email);
     }
 
+    if(function_exists('filter_var')) {
+        $check = filter_var($email, FILTER_VALIDATE_EMAIL);
+        if(!$check) {
+            return Config::lang_f('pInvalidMailRegex', $email);
+        }
+    }
     // Determine domain name
     $matches=array();
     if (!preg_match('|@(.+)$|', $ce_email, $matches)) {