PHP無限分類

定義乙個陣列 或者從資料庫裡取出

$data = array(

array(
'id' => 1,
'pid' => 0,
'cname' => '數碼'
),array(
'id' => 2,
'pid' => 0,
'cname' => '家用電器'
),array(
'id' => 3,
'pid' => 0,
'cname' => '電腦'
),array(
'id' => 4,
'pid' => 0,
'cname' => '服裝'
),array(
'id' => 5,
'pid' => 0,
'cname' => '食品'
),array(
'id' => 6,
'pid' => 0,
'cname' => '知識'
),array(
'id' => 7,
'pid' => 1,
'cname' => '手機'
),array(
'id' => 8,
'pid' => 1,
'cname' => '攝像機'
),array(
'id' => 9,
'pid' => 1,
'cname' => '單反'
),array(
'id' => 10,
'pid' => 1,
'cname' => '卡片'
),array(
'id' => 11,
'pid' => 2,
'cname' => '高畫質電視'
),array(
'id' => 12,
'pid' => 2,
'cname' => '4k超清電視'
),array(
'id' => 13,
'pid' => 12,
'cname' => 'letv'
),array(
'id' => 14,
'pid' => 12,
'cname' => 'mitv'
),array(
'id' => 15,
'pid' => 8,
'cname' => 'iphone'
),array(
'id' => 16,
'pid' => 8,
'cname' => '魅族'
),array(
'id' => 17,
'pid' => 8,
'cname' => '小公尺'
),array(
'id' => 18,
'pid' => 8,
'cname' => '錘子'
),array(
'id' => 19,
'pid' => 15,
'cname' => 'iphone6'
),array(
'id' => 20,
'pid' => 15,
'cname' => 'iphone6s'
),array(
'id' => 21,
'pid' => 3,
'cname' => '平板電腦'
),array(
'id' => 22,
'pid' => 21,
),array(
'id' => 23,
'pid' => 22,
'cname' => 'ipad air 2'
),array(
'id' => 24,
'pid' => 3,
'cname' => '筆記本'
),array(
'id' => 25,
'pid' => 24,
'cname' => 'macbook pro'
),array(
'id' => 26,
'pid' => 3,
'cname' => 'macbook air'
),);

function

tree
($arr, $parentid = 0, $level = 0, $html = '-')
$v->html .= str_repeat($html, $level);
$data = $v;
$data = array_merge($data, tree($model, $v->id, $level + 1));}}
return
$data;
}

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