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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 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
input: 6, output: 8
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Catchable fatal error: Argument 1 passed to echoFibonacciNumber() must be an instance of int, integer given, called in /in/t24Fv on line 18 and defined in /in/t24Fv on line 3
Process exited with code 255.

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