这篇文章主要简单的介绍了php递归无限分类方法实例。

<?php
$conn=mysql_connect("localhost:3306","root","");
mysql_select_db("test");
mysql_query("set names utf8");

$sql = "select * from category";

$ret  = mysql_query($sql,$conn);
$arr=array();
while(($info  = mysql_fetch_assoc($ret))!=false)
{
   
    $arr[] =array("id"=>$info['Id'],"name"=>$info['Name'],"pid"=>$info['Pid']);
    
}



function gc($arr=array(),$pid=-1)
{
    $tree = array();
    $temp = array();
    if($arr)
    {
        
         foreach($arr as  $k=>$v)
         {
           
            if($v['pid']==$pid)
            {
              $temp = gc($arr,$v['id']);
              $temp && $v['son'] =$temp;
              $tree [] = $v;
                
            }
            
         }
        
        
    }
    
    return $tree;
    
}
$data=gc($arr);
 print_r($data);
?>