Error implements Throwable.

\-Error
|-CompileError
| \-ParseError
|-TypeError
| \-ArgumentCountError
|-ArithmeticError
| \-DivisionByZeroError
|-AssertionError
\-PhpParser\ErrorHandler\Throwing

• Checking if a transaction is still open in PDO
• Influence var_dump output of an object in PHP
• The class structure of the SPL classes

PHP 7.3, Zend 3.0, Symfony 4.3, Laravel 5.8, PHPUnit 8.0, Doctrine 2.10