src/Neutrino/Debug/VarDump.php
private function checkObjectRecursion($obj)
    {
        static $dump;

        if (!isset($dump)) {
            $dump = [];
        }

        if (in_array($obj, $dump, true)) {
            return true;
        }

        $dump[] = $obj;

        $return = false;

        $props = Reflexion::getReflectionProperties($obj);
        foreach ($props as $prop) {
            $val = Reflexion::get($obj, $prop->getName());
            if (is_array($val) && $this->checkArrayRecursion($val)) {
                $return = true;
                break;
            } elseif (is_object($val) && $this->checkObjectRecursion($val)) {
                $return = true;
                break;
            }
        }
        foreach ($obj as $val) {
            if (is_array($val) && $this->checkArrayRecursion($val)) {
                $return = true;
                break;
            } elseif (is_object($val) && $this->checkObjectRecursion($val)) {
                $return = true;
                break;
            }
        }

        array_pop($dump);

        return $return;
    }
private function checkObjectRecursion($obj)
    {
        static $dump;

        if (!isset($dump)) {
            $dump = [];
        }

        if (in_array($obj, $dump, true)) {
            return true;
        }

        $dump[] = $obj;

        $return = false;

        $props = Reflexion::getReflectionProperties($obj);
        foreach ($props as $prop) {
            $val = Reflexion::get($obj, $prop->getName());
            if (is_array($val) && $this->checkArrayRecursion($val)) {
                $return = true;
                break;
            } elseif (is_object($val) && $this->checkObjectRecursion($val)) {
                $return = true;
                break;
            }
        }
        foreach ($obj as $val) {
            if (is_array($val) && $this->checkArrayRecursion($val)) {
                $return = true;
                break;
            } elseif (is_object($val) && $this->checkObjectRecursion($val)) {
                $return = true;
                break;
            }
        }

        array_pop($dump);

        return $return;
    }
Check if an object contains any recursion

@param $obj

@return bool