Symfony\Component\VarDumper\Dumper\HtmlDumper::dump PHP Method

    public function dump(Data $data, $output = null, array $extraDisplayOptions = array())
    {
        $this->extraDisplayOptions = $extraDisplayOptions;
        $result = parent::dump($data, $output);
        $this->dumpId = 'sf-dump-' . mt_rand();
        return $result;
    }

 public function __invoke($var)
 {
     ob_start();
     $this->dumper->dump($this->cloner->cloneVar($var));
     $result = ob_get_contents();
     ob_end_clean();
     return $result;
 }