无限极分类

Posted 2020-08-03 李先森博客

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<?php
// header("Content-type: text/html; charset=utf-8");
header("Content-type: text/html; charset=gb2312");

   $link = mysqli_connect("192.168.1.181","root","123456","teacher","3306");
   $sql ="select * from user";
   $row = mysqli_query($link,$sql);
   while($arr = mysqli_fetch_assoc($row)){
       $data[] = $arr;
   }
   $data1 = fun($data,$par_id=0,$leve=0);
   function fun($data,$par_id=0,$leve=0)
   {
       static $list = array();
       foreach ($data as $key => $v) {
           if ($v[‘pid‘]==$par_id) {
               $v[‘leve‘] =$leve;
               $list[] = $v;
               fun($data,$v[‘id‘],$leve+1);
           }
       }
       return $list;
   }
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
   <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
   <title>Document</title>
</head>
<body>
       <select name="" id="">

       <?php foreach ($data1 as $key => $v) { ?>
           <option value="<?php echo $v[‘id‘]?>"><?php echo str_repeat(‘  ‘,$v[‘leve‘]).$v[‘name‘]?></option>
       <?php } ?>
   </select>
</body>
</html>

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