\-Exception
|-ErrorException
|-ClosedGeneratorException
|-DOMException
|-LogicException
| |-BadFunctionCallException
| | \-BadMethodCallException
| |-DomainException
| |-InvalidArgumentException
| |-LengthException
| \-OutOfRangeException
|-RuntimeException
| |-OutOfBoundsException
| |-OverflowException
| |-RangeException
| |-UnderflowException
| |-UnexpectedValueException
| |-PDOException
| \-SNMPException
|-IntlException
|-JsonException
|-PharException
|-ReflectionException
\-SodiumException

• PHP's DoublyLinkedList
• CSV file with SplFileObject
• Access data of Traversable with IteratorIterator

PHP 7.4, Zend 3.0, Symfony 4.3, Laravel 5.8, PHPUnit 8.0, Doctrine 2.10