Question

function get_hierarchy_page()
{
    $detail = $this->input->post('name');
    $tree = $this->dashboard_model->get_detail($detail);
    $this->load->view('layout/layout', $data);

    if(isset($tree))
    {
        $data['hierarchy'] = $this->data_array_for_teacher($tree);
    }
}

function data_array_for_teacher($tree)
{
    if(!(isset($tree)))
        return 0;

    $data_query = mysql_query("select * from tbl_level");

    while($result = mysql_fetch_assoc($data_query))
    {
        $id = $result['level_id'];
        $data_array[$id] = $result;
    }

    //array to get level id
    while($level_result = mysql_fetch_assoc($tree))
    {
        $level_array[] = $level_result['level_id'];
    }

    if(!(isset($level_array)))
        return 0;

    foreach($level_array as $level)
    {
        $p   = $this->recursive_for_teacher($data_array,$level);    
        print_r($p);
    }
}

function recursive_for_teacher($data_array,$level_once)
{
    if(!isset($data_array,$level_once))
        return 0;

    $i = 0;
    static $p = array();
    $data = $data_array;
    $y = $level_once;
    $x = $data[$y]['level_parent'];
    $z = $data[$y]['level_name'];
    $y=$x;
    array_push($p,$z);
    $p[] = $z;

    if($y!=0)
        $this->recursive_for_teacher($data,$y);

    return $p;
}

我正在研究一个基于使用邻接列表模型存储在mysql中的分层数据的系统。我有2个表tbl_user和tbl_level。
tbl_level包含以下字段：level_id，level_parent，level_name。这三个字段分别与标准数据库结构中的id，parent_name，parent_id相同。

在表tbl_level中，有许多组织，每个组织都有不同的层次结构我写了上面的代码，解决了我在给定组织中获得任何权限的整个层次结构的问题我现在面临的唯一问题是当我在一个阵列中得到所需的答案时每个权威我需要一个数组 Array(
[0] => Engineering and Technology
    [1] => Univ1
    [2] => Class
    [3] => Master of Business Administration
    [4] => Engineering and Technology
    [5] => univ1
    [6] => Class_cse
    [7] => Computer Science
    [8] => Bachelor of Technology
    [9] => Engineering and Technology
    [10] => univ1
)

有人能为这个问题提出更好的解决方案吗？

Answer 1

function parent_sort($categories)
{    
    foreach($categories as $item)
        $childs[$item->parent_id][] = $item;
    foreach($categories as $item) 
        if (isset($childs[$item->category_id]))
            $item->childs = $childs[$item->category_id];

    return $childs[0];
}

您可以使用此函数对水平数组进行排序，它将按级别输出排序数组

从邻接列表模型数据库中检索数据。（MySQL）

1 个答案: