Merge branch '3.4' into 4.4

* 3.4:
  Enable "native_constant_invocation" CS rule
  Make AbstractPhpFileCacheWarmer public

Author: nicolas-grekas

PropertyAccessor.php

@@ -889,7 +889,7 @@ private function getPropertyPath($propertyPath): PropertyPath
     public static function createCache($namespace, $defaultLifetime, $version, LoggerInterface $logger = null)
     {
         if (null === $defaultLifetime) {
-            @trigger_error(sprintf('Passing null as "$defaultLifetime" 2nd argument of the "%s()" method is deprecated since Symfony 4.4, pass 0 instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing null as "$defaultLifetime" 2nd argument of the "%s()" method is deprecated since Symfony 4.4, pass 0 instead.', __METHOD__), \E_USER_DEPRECATED);
         }
 
         if (!class_exists('Symfony\Component\Cache\Adapter\ApcuAdapter')) {
@@ -901,7 +901,7 @@ public static function createCache($namespace, $defaultLifetime, $version, Logge
         }
 
         $apcu = new ApcuAdapter($namespace, $defaultLifetime / 5, $version);
-        if ('cli' === \PHP_SAPI && !filter_var(ini_get('apc.enable_cli'), FILTER_VALIDATE_BOOLEAN)) {
+        if ('cli' === \PHP_SAPI && !filter_var(ini_get('apc.enable_cli'), \FILTER_VALIDATE_BOOLEAN)) {
             $apcu->setLogger(new NullLogger());
         } elseif (null !== $logger) {
             $apcu->setLogger($logger);