Symfony\Component\HttpKernel\Kernel::stripComments PHP Method

    static public function stripComments($source)
    {
        if (!function_exists('token_get_all')) {
            return $source;
        }

        $output = '';
        foreach (token_get_all($source) as $token) {
            if (is_string($token)) {
                $output .= $token;
            } elseif (!in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
                $output .= $token[1];
            }
        }

        // replace multiple new lines with a single newline
        $output = preg_replace(array('/\s+$/Sm', '/\n+/S'), "\n", $output);

        // reformat {} "a la python"
        $output = preg_replace(array('/\n\s*\{/', '/\n\s*\}/'), array(' {', ' }'), $output);

        return $output;
    }

 public function compile()
 {
     if (file_exists('symfony.phar')) {
         unlink('symfony.phar');
     }
     $phar = new \Phar('symfony.phar', 0, 'Symfony');
     $phar->setSignatureAlgorithm(\Phar::SHA1);
     $phar->startBuffering();
     // Files
     foreach ($this->getFiles() as $file) {
         $path = str_replace(__DIR__ . '/', '', $file);
         if (false !== strpos($file, '.php')) {
             $content = Kernel::stripComments(file_get_contents($file));
         } else {
             $content = file_get_contents($file);
         }
         $phar->addFromString($path, $content);
     }
     // Stubs
     $phar['_cli_stub.php'] = $this->getCliStub();
     $phar['_web_stub.php'] = $this->getWebStub();
     $phar->setDefaultStub('_cli_stub.php', '_web_stub.php');
     $phar->stopBuffering();
     //$phar->compressFiles(\Phar::GZ);
     unset($phar);
 }