Overtrue\PHPLint\Linter::getFiles PHP Method

    public function getFiles()
    {
        if (empty($this->files)) {
            foreach ((array) $this->path as $path) {
                if (is_dir($path)) {
                    $this->files = array_merge($this->files, $this->getFilesFromDir($path));
                } else {
                    if (is_file($path)) {
                        $file = new SplFileInfo($path);
                        $this->files[$file->getRealPath()] = $file;
                    }
                }
            }
        }
        return $this->files;
    }

 /**
  * Executes the current command.
  *
  * This method is not abstract because you can use this class
  * as a concrete class. In this case, instead of defining the
  * execute() method, you set the code to execute by passing
  * a Closure to the setCode() method.
  *
  * @param InputInterface  $input  An InputInterface instance
  * @param OutputInterface $output An OutputInterface instance
  *
  * @throws LogicException When this abstract method is not implemented
  *
  * @return null|int null or 0 if everything went fine, or an error code
  *
  * @see setCode()
  */
 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $startTime = microtime(true);
     $startMemUsage = memory_get_usage(true);
     $output->writeln($this->getApplication()->getLongVersion() . " by overtrue and contributors.\n");
     $options = $this->mergeOptions();
     $verbosity = $output->getVerbosity();
     if ($verbosity >= OutputInterface::VERBOSITY_DEBUG) {
         $output->writeln('Options: ' . json_encode($options));
     }
     $linter = new Linter($options['path'], $options['exclude'], $options['extensions']);
     $linter->setProcessLimit($options['jobs']);
     if (!$input->getOption('no-cache') && Cache::isCached()) {
         $output->writeln('Using cache.');
         $linter->setCache(Cache::get());
     }
     $fileCount = count($linter->getFiles());
     if ($fileCount <= 0) {
         $output->writeln('<info>Could not find files to lint</info>');
         return 0;
     }
     $errors = $this->executeLint($linter, $output, $fileCount, !$input->getOption('no-cache'));
     $timeUsage = Helper::formatTime(microtime(true) - $startTime);
     $memUsage = Helper::formatMemory(memory_get_usage(true) - $startMemUsage);
     $code = 0;
     $errCount = count($errors);
     $output->writeln("\n\nTime: {$timeUsage}, Memory: {$memUsage}MB\n");
     if ($errCount > 0) {
         $output->writeln('<error>FAILURES!</error>');
         $output->writeln("<error>Files: {$fileCount}, Failures: {$errCount}</error>");
         $this->showErrors($errors);
         $code = 1;
     } else {
         $output->writeln("<info>OK! (Files: {$fileCount}, Success: {$fileCount})</info>");
     }
     return $code;
 }