以树结构显示数组

I have an array ($select_categories) which loads categories from my categories table
I want to display it in the following manner (as shown in the below image ...)
Display 1st Level followed by 2 nd Level

DB DESIGN

Db conditions

is_parent : 0 ,0 ,0

is_child : PARENT_ID,0,0

is_sub_child : PARENT_ID ,CHILD_ID , 0

I Tried something like this ...

$select_categories is the categories array

$select_categories = $this->category1_model->select_categories();

        $tree = array();
        foreach ($select_categories as $k => $arr) {

            $tree[$arr['category_id']] = $arr;
            $tree[$arr['category_id']]['is_child'] = array();
        }


        foreach ($tree as $k => &$new_a) {
            $parent = $tree[$k]['is_parent'];
            if(isset($tree[$parent])){
                $tree[$parent]['is_child'][] = & $tree[$k];
            }
        }

Need this way

live
    for sale
    for rent
    hostels
    pg accomodation


work
    jobs
    company

Enjoy
    cinemas
    parks
    adventures
    studios
Study
    schools
    colleges
    universities
move
    airline
    railway
    road

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1条回答默认最新

dpspn60064 2015-09-07 12:36

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Maybe you should try something usefull but inelegant like this to reorder your array :

$result = array();
foreach($array AS $k => $line) {
    if($line['is_child'] == 0) {
        $result[$k] => $line;
        foreach($array AS $k2 => $line2) {
            if($line2['is_child'] > 0 && $line2['is_child'] == $line['category_id']) {
                $result[$k]['children'][$k2] = $line2;
                foreach($array AS $k3 => $line3) {
                    if($line3['is_sub_child'] > 0 && $line3['is_sub_child'] == $line2['category_id']) {
                        $result[$k]['children'][$k2]['subchildren'][$k3] = $line3;
                    }
                }
            }
        }
    }
}

Then, use a foreach in a foreach in a foreach ;)

本回答被题主选为最佳回答 , 对您是否有帮助呢?

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以树结构显示数组

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