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Multiple instances of php array recursive method

WBOY
Release： 2016-07-25 09:11:57
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php数组递归方法

有如下php数组：

  2. function genTree5($items) {
  3. foreach ($items as $item)
  4. $items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];
  5. return isset($items[0]['son']) ? $items[0]['son'] : array();
  6. }
复制代码

方法二：

  3. function findChild($arr,$id){

  4. $childs=array();
  5. foreach ($arr as $k => $v){
  6. if($v['pid']== $id){
  7. $childs[]=$v;
  8. }
  9. }
  10. // echo "
    ";print_r($childs);die();
  11. return $childs;
  12. }

  13. function build_tree($root_id){

  14. global $items;
  15. $childs =array();
  16. $childs=findChild($items,$root_id);
  17. // print_r($childs);
  18. // die();
  19. if(empty($childs)){
  20. return null;
  21. }
  22. foreach ($childs as $k => $v){
  23. $rescurTree=build_tree($v['id']);
  24. if( null != $rescurTree){
  25. $childs[$k]['son']=$rescurTree;
  26. }
  27. }
  28. return $childs;
  29. }

复制代码


Related labels：
php数组递归方法多个实例
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