Phan\Analysis\PostOrderAnalysisVisitor::visitEncapsList PHP Method

    public function visitEncapsList(Node $node) : Context
    {
        foreach ((array) $node->children as $child_node) {
            // Confirm that variables exists
            if ($child_node instanceof Node && $child_node->kind == \ast\AST_VAR) {
                $variable_name = $child_node->children['name'];
                // Ignore $$var type things
                if (!is_string($variable_name)) {
                    continue;
                }
                // Don't worry about non-existent undeclared variables
                // in the global scope if configured to do so
                if (Config::get()->ignore_undeclared_variables_in_global_scope && $this->context->isInGlobalScope()) {
                    continue;
                }
                if (!$this->context->getScope()->hasVariableWithName($variable_name) && !Variable::isSuperglobalVariableWithName($variable_name)) {
                    $this->emitIssue(Issue::UndeclaredVariable, $child_node->lineno ?? 0, $variable_name);
                }
            }
        }
        return $this->context;
    }