What is the output of the following code? function fibonacci (&$x1 = 0, &$x2 = 1) { $result = $x1 + $x2; $x1 = $x2; $x2 = $result; return $result; } for ($i = 0; $i < 10; $i++) { echo fibonacci()…

The correct answer is B. 1,1,1,1,1,1,1,1,1,1. See the full explanation below for the reasoning.

Question

What is the output of the following code? function fibonacci (&$x1 = 0, &$x2 = 1) { $result = $x1 + $x2; $x1 = $x2; $x2 = $result; return $result; } for ($i = 0; $i < 10; $i++) { echo fibonacci() . ','; }

Options

AAn error
B1,1,1,1,1,1,1,1,1,1,
C1,1,2,3,5,8,13,21,34,55,
DNothing

How the community answered

(37 responses)

A
14% (5)
B
78% (29)
C
3% (1)
D
5% (2)

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