passing object in functions in php 5

Question : In PHP 5 you can use the ______ operator to ensure that an object is of a particular type. You can also use _______ in the function declaration.

Answer:

1. instanceof, is_a
2. instanceof, type-hinting
3. type, instanceof
4. ===, type-hinting
type-hinting ensures that we are passing a particular type of parameter to a function.
5. ===, is_a
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