INTL_IDNA_VARIANT_UTS46 is not supported on all systems (#173)

* INTL_IDNA_VARIANT_UTS46 is not supported on all systems Fall back to INTL_IDNA_VARIANT_2003 if INTL_IDNA_VARIANT_UTS46 is not found. * Fix syntax error * Update DNSCheckValidation.php
egulias · Aug 16, 2018 · 54859fa · 54859fa
1 parent 1354440
commit 54859fa
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/EmailValidator/Validation/DNSCheckValidation.php b/EmailValidator/Validation/DNSCheckValidation.php
@@ -51,7 +51,11 @@ public function getWarnings()
 
     protected function checkDNS($host)
     {
-        $host = rtrim(idn_to_ascii($host, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46), '.') . '.';
+        $variant = INTL_IDNA_VARIANT_2003;
+        if ( defined('INTL_IDNA_VARIANT_UTS46') ) {
+            $variant = INTL_IDNA_VARIANT_UTS46;
+        }
+        $host = rtrim(idn_to_ascii($host, IDNA_DEFAULT, $variant), '.') . '.';
 
         $Aresult = true;
         $MXresult = checkdnsrr($host, 'MX');