The `try-catch` is no longer needed now support for PHPCS < 3.7.1 has been dropped.

* Add tests with union types.
* Add the new `false` and `null` types to the `$newTypes` array.
* Explode the type received from the `FunctionDeclarations::getParameters()` method on the `|` bitwise or operator and do the existing checks for each type found.

This maintains the existing behaviour, while allowing for union types.

Detect stand-alone `false`/`null` types and throw an error when these are encountered.

The `try-catch` is no longer needed now support for PHPCS < 3.7.1 has been dropped.

* Add tests with union types.
* Add the new `false` and `null` types to the `$newTypes` array.
* Explode the type received from the `FunctionDeclarations::getProperties()` method on the `|` bitwise or operator and do the existing checks for each type found.

This maintains the existing behaviour, while allowing for union types.

Detect stand-alone `false`/`null` types and throw an error when these are encountered.

* Add tests with union types.
* Add the new `false` and `null` types to the `$newTypes` array.
* Explode the type received from the `Variables::getMemberProperties()` method on the `|` bitwise or operator and do the existing checks for each type found.

This maintains the existing behaviour, while allowing for union types.

Detect stand-alone `false`/`null` types and throw an error when these are encountered.