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<?php function fibonacci($n) { $arr = array(); $a = 0; $b = 1; while($n-- > 0) { array_push($arr, $a); $a = $b - $a; $b = $a + $b; } return $arr; } foreach(fibonacci(20) as $n => $i) { echo "$n: $i\n"; }
Output for 5.4.5 - 5.4.43, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0: 0 1: 1 2: 1 3: 2 4: 3 5: 5 6: 8 7: 13 8: 21 9: 34 10: 55 11: 89 12: 144 13: 233 14: 377 15: 610 16: 987 17: 1597 18: 2584 19: 4181
preferences:
173.21 ms | 403 KiB | 177 Q