php - 无法理解嵌套多次数组的逻辑

问题描述

我在函数中的逻辑有问题。我正在尝试将数组嵌套 X 次，以便它看起来像一棵有孩子的树。我将它与第一个孩子嵌套，但是当我深入时，我找不到删除它们的解决方案从主数组中并将它们添加到深处。“父”键是需要有子元素的父元素的 ID。任何帮助表示赞赏。

function array_search_multidim($array, $column, $key){
    return (array_search($key, array_column($array, $column)));
}

public function get_all() {
    $full_menu = $this->Site_model->get_all_menu();
    usort($full_menu, function($a, $b){
        return strcmp($a->menu_order, $b->menu_order);
    });

    foreach($full_menu as $fm) {
        $mega_menu[] = array(
        'id'        => $fm->id,
        'text'      => $fm->title,
        'href'      => $fm->link,
        'icon'      => $fm->icon,
        'target'    => $fm->target,
        'title'     => $fm->name,
        'order'     => $fm->menu_order,
        'parent'    => $fm->parent
        );

        if($fm->parent != 0) {
            $child_menu[] = array(
            'id'        => $fm->id,
            'text'      => $fm->title,
            'href'      => $fm->link,
            'icon'      => $fm->icon,
            'target'    => $fm->target,
            'title'     => $fm->name,
            'order'     => $fm->menu_order,
            'parent'    => $fm->parent
            );
        }
    }

    foreach($child_menu as $cm) {
        $mega_menu[$this->array_search_multidim($mega_menu,'id',$cm['parent'])]['children'][] = array(
        'id'        => $cm['id'],
        'text'      => $cm['text'],
        'href'      => $cm['href'],
        'icon'      => $cm['icon'],
        'target'    => $cm['target'],
        'title'     => $cm['title'],
        'order'     => $cm['order'],
        'parent'    => $cm['parent']
        );
    }

    echo '<pre>';
        print_r($mega_menu);
        echo '</pre>';
    }

现在我收到这样的数组

标签： phpcodeigniter

在 get_all 函数的第一个 foreach 中，您每次都将 $full_menu arrach 的元素添加到 $mega_menu，如果 $fm->parent != 0 则事件（这意味着每个子元素都保存到数组的第一级）。接下来你处理孩子。您必须仅保存（在数组的第一维）具有 $fm->parent == 0 的那些元素。您可以通过更改 get_all 中的条件来做到这一点。

function array_search_multidim($array, $column, $key){
    return (array_search($key, array_column($array, $column)));
}

public function get_all() {
    $full_menu = $this->Site_model->get_all_menu();
    usort($full_menu, function($a, $b){
        return strcmp($a->menu_order, $b->menu_order);
    });

    foreach($full_menu as $fm) {
        if($fm->parent == 0) {
            $mega_menu[] = array(
                'id' => $fm->id,
                'text' => $fm->title,
                'href' => $fm->link,
                'icon' => $fm->icon,
                'target' => $fm->target,
                'title' => $fm->name,
                'order' => $fm->menu_order,
                'parent' => $fm->parent
            );
        } else {
            $child_menu[] = array(
                'id'        => $fm->id,
                'text'      => $fm->title,
                'href'      => $fm->link,
                'icon'      => $fm->icon,
                'target'    => $fm->target,
                'title'     => $fm->name,
                'order'     => $fm->menu_order,
                'parent'    => $fm->parent
            );
        }
    }

    foreach($child_menu as $cm) {
        $mega_menu[$this->array_search_multidim($mega_menu,'id',$cm['parent'])]['children'][] = array(
            'id'        => $cm['id'],
            'text'      => $cm['text'],
            'href'      => $cm['href'],
            'icon'      => $cm['icon'],
            'target'    => $cm['target'],
            'title'     => $cm['title'],
            'order'     => $cm['order'],
            'parent'    => $cm['parent']
        );
    }

    echo '<pre>';
    print_r($mega_menu);
    echo '</pre>';
}

php - 无法理解嵌套多次数组的逻辑

问题描述

解决方案

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