利用php產生無限欄目樹方法介紹

這篇文章講述利用php產生無限欄目樹方法介紹

欄目數組:
$arr=Array(

Array('cid' => 2,'cname' => '新聞','pid' => 0),
Array('cid' => 4,'cname' =>'體育','pid' => 0),
Array('cid' => 5,'cname' => '娛樂','pid' => 0),
Array('cid' => 7,'cname' => '熱點新聞','pid' =>2),
Array('cid' => 8,'cname' => '小眾新聞','pid' => 2),
Array('cid' => 9,'cname' => '民謠新聞','pid' => 8),

);

<?php$arr=Array(    Array('cid' => 2,'cname' => '新聞','pid' => 0),    Array('cid' => 4,'cname' =>'體育','pid' => 0),    Array('cid' => 5,'cname' => '娛樂','pid' => 0),    Array('cid' => 7,'cname' => '熱點新聞','pid' =>2),    Array('cid' => 8,'cname' => '小眾新聞','pid' => 2),    Array('cid' => 9,'cname' => '民謠新聞','pid' => 8),);function formatTree($array, $pid = 0,$level = 1,$field = array('pid'=>'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);                //判斷是否存在子數組                $tem && $v[$field['children']] = $tem;                $arr[] = $v;            }        }        return $arr;    }$tree = formatTree( $arr,0,1, $field = array('pid'=>'pid','id'=>'cid','children'=>'children') );echo '<pre>';print_r( $tree);?>