Advanced
PHP
Q74 / 100
What are PHP intersection types (PHP 8.1)?
Correct! Well done.
Incorrect.
The correct answer is B) A type declaration requiring a value to satisfy multiple type constraints simultaneously: Iterator&Countable
B
Correct Answer
A type declaration requiring a value to satisfy multiple type constraints simultaneously: Iterator&Countable
Explanation
function f(Iterator&Countable $x) requires $x to implement both Iterator and Countable. Intersection types are the dual of union types.
Progress
74/100