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php 地区分类排序算法_PHP

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Release: 2016-06-01 12:05:30
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写一个函数,将数据
$array = array(
    0=>array("","河北"),
    1=>array("","北京"),
    2=>array(0,"保定"),
    3=>array(1,"海淀"),
    4=>array(3,"中关村"),
    5=>array(2,"涿州")
);
处理后返回如下:
河北
-保定
--涿州
北京
-海淀
--中关村
复制代码 代码如下:
function typeArray($array){
        $con = null;
        foreach ($array as $k=>$v){
            $na[$k] = is_numeric($v[0]) ? $na[$v[0]].$k."|" : $k."|";
        }
        asort($na); //排序
        foreach ($na as $k=>$v){
          $s = substr_count($v,"|");
          $con .= str_repeat("-",($s-1)).$array[$k][1]."\n";
        }
        return $con;
    }
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