- <?php
- //$all 为 1 则返回 fabnacci 数列所有数组元素
- function fabnacci($n, $all = 1){
- static $fabn = [];
- if($n < 2){
- $fabn[$n] = 1;
- }else{
- if(empty($fabn[$n])){
- $fabn[$n] = fabnacci($n - 1, 0) + fabnacci($n - 2, 0);
- }
- }
- if($all == 1){
- return $fabn;
- }else{
- return $fabn[$n];
- }
- }
- var_dump(implode(" ", fabnacci(10)));
- var_dump(implode(" ", fabnacci(10)));
- ?>
返回显示
string(26) "1 1 2 3 5 8 13 21 34 55 89" string(26) "1 1 2 3 5 8 13 21 34 55 89"
来源: http://www.bubuko.com/infodetail-2520676.html