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<?php function echoFibonacciNumber(int $input) { if ($input < 0) { echo "Invalid input"; } if ($input === 0 || $input === 1) { $output = $input; } else { $fi = (sqrt(5) + 1) / 2; $output = floor(pow($fi, $input) / sqrt(5) + 1 / 2); } echo 'input: '.$input.', output: '.$output; } echo echoFibonacciNumber(6);
Output for git.master, git.master_jit, rfc.property-hooks
input: 6, output: 8

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