Run AllTests against PHP 7.3 on travis (#14148)

* Run AllTests against PHP 7.3 on travis

* use INTL_IDNA_VARIANT_UTS46 for idn_to_utf8

PHP 7.2 deprecated INTL_IDNA_VARIANT_2003 but still uses it as default until 7.4

* Fix test as var_export signature for stdClasses changed in PHP 7.3

see https://github.com/php/php-src/commit/e4e9cd835550990a6b8df7c61d59b6cc0da9b5b2

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/PHPUnit/Integration/EmailValidatorTest.php b/tests/PHPUnit/Integration/EmailValidatorTest.php
index 8cb0c198c0..4a4665f2d6 100644
--- a/tests/PHPUnit/Integration/EmailValidatorTest.php
+++ b/tests/PHPUnit/Integration/EmailValidatorTest.php
@@ -60,7 +60,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
             if (strpos(mb_strtolower($tld), 'xn--') !== 0) {
                 $tld = mb_strtolower($tld);
             }
-            $domainNameExtension = idn_to_utf8($tld);
+            $domainNameExtension = idn_to_utf8($tld, 0, INTL_IDNA_VARIANT_UTS46);
             $email = 'test@example.' . $domainNameExtension;
 
             if(!$this->isValid($email)) {
@@ -101,7 +101,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
                 $tld = mb_strtolower($tld);
             }
             $this->assertFalse(
-                $this->isValid('test@example.' . idn_to_utf8($tld))
+                $this->isValid('test@example.' . idn_to_utf8($tld, 0, INTL_IDNA_VARIANT_UTS46))
             );
         }
     }