Mastering PHP 7

Void return types

With all the power of function parameter types and function return types introduced in PHP 7, there was one thing missing from the mix function. While function return types allowed specifying a desired return type, they did not allow specifying the lack of return value. To address this inconsistency, the PHP 7.1 release introduced a void return type feature.

Why is this important, we might ask ourselves? As with previously mentioned function return types, this feature can be extremely useful for documentation and error-checking purposes. By its nature, PHP does not require a return statement in its function definitions, making it unclear at first look if the function simply executes certain actions or returns a value. Using ...