Ein Google-Nutzer
But found the following Error: function fibo($a,$b,$step){ if($step > 0){ --$step; return fibo($b,$a+$b, $step); }else{ return $b; } } echo fibo(0,1,5); You say it's : 0 (thats false, cause it's 8). Please correct this. Maybe a feature to edit the answers would be really great.