Problem in the fibonacci function
Author: mstoltCreated Feb 13, 2023Updated Feb 13, 2023
There is a problem in the fibonacci function. The fibonacci number is not defined for numbers < 0. The current function would run in an endless loop (as far as PHP stack count reaches).
function fibonacci(int $n): int
{
if ($n < 0){
throw new Exception('Only positive integer are valid arguments');
}
if ($n === 0 || $n === 1) {
return $n;
}
if ($n >= 50) {
throw new Exception('Not supported');
}
return fibonacci($n - 1) + fibonacci($n - 2);
}Kind regards and thanks for the inspiring clean-code-php examples.
Source: piotrplenik/clean-code-php