PHP regional classification sorting algorithm_PHP tutorial

Write a function to convert the data
$array = array(
0=>array("","Hebei"),
1=>array(""," Beijing"),
2=>array(0,"Baoding"),
3=>array(1,"Haidian"),
4=>array(3,"Zhongguancun" ),
5=>array(2,"Zhuozhou")
);
After processing, the return is as follows:
Hebei
-Baoding
-- Zhuozhou
Beijing
-Haidian
--Zhongguancun

Copy code The code is as follows:

function typeArray ($array){
                $con = null; na[$v[0]].$k."|" : $k."|";
                                                                                                                                                               >$v){
           $s = substr_count($v,"|"); 1]."n";
        }
               return $con;                                  



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TechArticleWrite a function to convert the data $array = array( 0=array("","Hebei"), 1 =array("","Beijing"), 2=array(0,"Baoding"), 3=array(1,"Haidian"), 4=array(3,"Zhongguancun"), 5=array(2, "Zhuozhou") ); Process...