这样的数组怎么让它树状显示呢？-PHP Tutorial-php.cn

Table of Contents

回复讨论(解决方案)

Home

Backend Development

PHP Tutorial

这样的数组怎么让它树状显示呢？

Jun 23, 2016 pm 02:21 PM

树状无限分类

Array(    [1] => Array        (            [id] => 1            [name] => 世界            [pid] => 0            [2] => Array                (                    [id] => 2                    [name] => 中国                    [pid] => 1                    [4] => Array                        (                            [id] => 4                            [name] => 湖南                            [pid] => 2                        )                )            [3] => Array                (                    [id] => 3                    [name] => 美国                    [pid] => 1                )        ))

Copy after login

回复讨论(解决方案)

本身就是树状，有pid还不简单么？递归就行了

$a = Array(  1 => Array(    'id' => 1,    'name' => '世界',    'pid' => 0,    2 => Array(      'id' => 2,      'name' => '中国',      'pid' => 1,      4 => Array(        'id' => 4,        'name' => '湖南',        'pid' => 2,      ),    ),    3 => Array(      'id' => 3,      'name' => '美国',      'pid' => 1,    ),  ),);tree($a);function tree($ar) {  if(! is_array($ar)) return;  echo '<ul>';  foreach($ar as $item) {    echo "$item[id] $item[name]";    foreach($item as $t) {      if(is_array($t)) {        tree(array($t));      }    }  }  echo '</ul>';}

Copy after login

	1 世界		2 中国			4 湖南		3 美国

Copy after login

<ul>1 世界<ul>2 中国<ul>4 湖南</ul></ul><ul>3 美国</ul></ul>

Copy after login

给你个有趣的玩法（具体有什么用也不晓得）

$a = Array(  1 => Array(    // 'id' => 1,    'name' => '世界',    // 'pid' => 0,    2 => Array(      // 'id' => 2,      'name' => '中国',      // 'pid' => 1,      4 => Array(        // 'id' => 4,        'name' => '湖南',        // 'pid' => 2,      ),    ),    3 => Array(      // 'id' => 3,      'name' => '美国',      // 'pid' => 1,    ),  ),);$awesome = new RecursiveTreeIterator(      new RecursiveArrayIterator($a),      null, null, RecursiveIteratorIterator::LEAVES_ONLY  );  foreach ($awesome as $line)      echo $line . PHP_EOL;

Copy after login

  |-世界  | |-中国  |   \-湖南    \-美国

Copy after login

灰常感谢！痛哭流涕！！折腾几天了,,,

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn