Merge branch '2.8' into 3.4

* 2.8:
  Fix Clidumper tests
  Enable the fixer enforcing fully-qualified calls for compiler-optimized functions
  Apply fixers
  Disable the native_constant_invocation fixer until it can be scoped
  Update the list of excluded files for the CS fixer

Author: nicolas-grekas

Command/ServerCommand.php

@@ -27,6 +27,6 @@ abstract class ServerCommand extends Command
      */
     public function isEnabled()
     {
-        return !defined('HHVM_VERSION') && parent::isEnabled();
+        return !\defined('HHVM_VERSION') && parent::isEnabled();
     }
 }

Command/ServerRunCommand.php

@@ -91,8 +91,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         // deprecated, logic to be removed in 4.0
         // this allows the commands to work out of the box with web/ and public/
-        if ($this->documentRoot && !is_dir($this->documentRoot) && is_dir(dirname($this->documentRoot).'/web')) {
-            $this->documentRoot = dirname($this->documentRoot).'/web';
+        if ($this->documentRoot && !is_dir($this->documentRoot) && is_dir(\dirname($this->documentRoot).'/web')) {
+            $this->documentRoot = \dirname($this->documentRoot).'/web';
         }
 
         if (null === $documentRoot = $input->getOption('docroot')) {

Command/ServerStartCommand.php

@@ -89,7 +89,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
     {
         $io = new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output);
 
-        if (!extension_loaded('pcntl')) {
+        if (!\extension_loaded('pcntl')) {
             $io->error(array(
                 'This command needs the pcntl extension to run.',
                 'You can either install it or use the "server:run" command instead.',
@@ -104,8 +104,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         // deprecated, logic to be removed in 4.0
         // this allows the commands to work out of the box with web/ and public/
-        if ($this->documentRoot && !is_dir($this->documentRoot) && is_dir(dirname($this->documentRoot).'/web')) {
-            $this->documentRoot = dirname($this->documentRoot).'/web';
+        if ($this->documentRoot && !is_dir($this->documentRoot) && is_dir(\dirname($this->documentRoot).'/web')) {
+            $this->documentRoot = \dirname($this->documentRoot).'/web';
         }
 
         if (null === $documentRoot = $input->getOption('docroot')) {

WebServer.php

@@ -154,7 +154,7 @@ private function createServerProcess(WebServerConfig $config)
         $process->setWorkingDirectory($config->getDocumentRoot());
         $process->setTimeout(null);
 
-        if (in_array('APP_ENV', explode(',', getenv('SYMFONY_DOTENV_VARS')))) {
+        if (\in_array('APP_ENV', explode(',', getenv('SYMFONY_DOTENV_VARS')))) {
             $process->setEnv(array('APP_ENV' => false));
             $process->inheritEnvironmentVariables();
         }