How should class MyObject be defined for the following code to work properly? Assume $array is an array and MyObject is a user-defined class. $obj = new MyObject(); array_walk($array, $obj);

The correct answer is D. MyObject should implement method __invoke. See the full explanation below for the reasoning.

Magic Methods and Traits

Question

How should class MyObject be defined for the following code to work properly? Assume $array is an array and MyObject is a user-defined class.
$obj = new MyObject();
array_walk($array, $obj);

Options

AMyObject should extend class Closure
BMyObject should implement interface Callable
CMyObject should implement method __call
DMyObject should implement method __invoke

How the community answered

(28 responses)

A
14% (4)
B
4% (1)
C
7% (2)
D
75% (21)

Topics

#__invoke#callable#array_walk#magic methods

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