nikic/PHP-Parser · error · \LogicException

enterNode() returned invalid value of type {type}

Error message

enterNode() returned invalid value of type {type}

What it means

Error "enterNode() returned invalid value of type {type}" thrown in nikic/PHP-Parser.

Source

Thrown at lib/PhpParser/NodeTraverser.php:131

            foreach ($this->visitors as $visitorIndex => $visitor) {
                $return = $visitor->enterNode($subNode);
                if (null !== $return) {
                    if ($return instanceof Node) {
                        $this->ensureReplacementReasonable($subNode, $return);
                        $subNode = $node->$name = $return;
                    } elseif (NodeVisitor::DONT_TRAVERSE_CHILDREN === $return) {
                        $traverseChildren = false;
                    } elseif (NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN === $return) {
                        $traverseChildren = false;
                        break;
                    } elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
                        $this->stopTraversal = true;
                        break 2;
                    } elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
                        $node->$name = null;
                        continue 2;
                    } else {
                        throw new \LogicException(
                            'enterNode() returned invalid value of type ' . gettype($return)
                        );
                    }
                }
            }

            if ($traverseChildren) {
                $this->traverseNode($subNode);
                if ($this->stopTraversal) {
                    break;
                }
            }

            for (; $visitorIndex >= 0; --$visitorIndex) {
                $visitor = $this->visitors[$visitorIndex];
                $return = $visitor->leaveNode($subNode);

                if (null !== $return) {

View on GitHub (pinned to fbd47f7ebc)

When it happens

Trigger: Thrown at lib/PhpParser/NodeTraverser.php:131 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nikic/PHP-Parser@fbd47f7ebc (2026-08-17). Data as JSON: /api/errors/19ec442b9b733580. Report an issue: GitHub.