How to generate infinite column tree in php-PHP Tutorial-php.cn

How to generate infinite column tree in php

墨辰丷

Release： 2023-03-27 20:20:02

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This article mainly introduces the method of generating unlimited column trees in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.

Column array:

$arr=Array(
  Array(&#39;cid&#39; => 2,&#39;cname&#39; => &#39;新闻&#39;,&#39;pid&#39; => 0),
  Array(&#39;cid&#39; => 4,&#39;cname&#39; =>&#39;体育&#39;,&#39;pid&#39; => 0),
  Array(&#39;cid&#39; => 5,&#39;cname&#39; => &#39;娱乐&#39;,&#39;pid&#39; => 0),
  Array(&#39;cid&#39; => 7,&#39;cname&#39; => &#39;热点新闻&#39;,&#39;pid&#39; =>2),
  Array(&#39;cid&#39; => 8,&#39;cname&#39; => &#39;小众新闻&#39;,&#39;pid&#39; => 2),
  Array(&#39;cid&#39; => 9,&#39;cname&#39; => &#39;民谣新闻&#39;,&#39;pid&#39; => 8),
);

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'pid','id'=>'id','children'=>'children')){
    $arr = array();
    foreach ($array as &$v) {
      if ($v[$field['pid']] == $pid) {
        $v['level'] = $level;
        $tem = formatTree($array, $v[$field['id']],$v['level']+1,$field);
        //判断是否存在子数组
        $tem && $v[$field['children']] = $tem;
        $arr[] = $v;
      }
    }
    return $arr;
  }
$tree = formatTree( $arr,0,1, $field = array('pid'=>'pid','id'=>'cid','children'=>'children') );
echo '';
print_r( $tree); 
?>　
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The above is this article The entire content, I hope it will be helpful to everyone's study.

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