What is the output of the following code? function z($x) { return function_ ($y) use ($x) { return str_repeat($y, $x); }; } $a = z(2); $b = z(3); echo $a(3) . $b(2);

The correct answer is B. 33222. See the full explanation below for the reasoning.

Closures

Question

What is the output of the following code?
function z($x) {
return function_ ($y) use ($x) {
return str_repeat($y, $x);
};
}
$a = z(2);
$b = z(3);
echo $a(3) . $b(2);

Options

A22333
B33222
C33322
D222333

How the community answered

(27 responses)

A
11% (3)
B
78% (21)
C
4% (1)
D
7% (2)

Topics

#closure use#currying#str_repeat#higher-order functions

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