Symfony\Component\HttpKernel\DataCollector\DataCollector::cloneVar PHP Méthode

    protected function cloneVar($var)
    {
        if (null === $this->cloner) {
            if (class_exists(ClassStub::class)) {
                $this->cloner = new VarCloner();
                $this->cloner->setMaxItems(250);
                $this->cloner->addCasters(array(
                    Stub::class => function (Stub $v, array $a, Stub $s, $isNested) {
                        return $isNested ? $a : StubCaster::castStub($v, $a, $s, true);
                    },
                ));
            } else {
                @trigger_error(sprintf('Using the %s() method without the VarDumper component is deprecated since version 3.2 and won\'t be supported in 4.0. Install symfony/var-dumper version 3.2 or above.', __METHOD__), E_USER_DEPRECATED);
                $this->cloner = false;
            }
        }
        if (false === $this->cloner) {
            if (null === $this->valueExporter) {
                $this->valueExporter = new ValueExporter();
            }

            return $this->valueExporter->exportValue($var);
        }

        return $this->cloner->cloneVar($this->decorateVar($var));
    }