Question

我有一个下面的PHP数组，您可以在其中查看基于“ parent_id”和“ parent”元素的类别/子类别结构。现在的要求是，基于“ menu_display_special = 1”条件，我要删除该键以及以该键的id为parent_id的键。

注意：如果条件“ menu_display_special = 1”匹配，则应从数组中删除类别和子类别（如果有）中的键。

结果应仅返回一个数组元素。即id = 2378

Array
(
    [35] => Joomla\CMS\Menu\MenuItem Object
        (
            [id] => 2375            
            [params:protected] => Joomla\Registry\Registry Object
                (
                    [data:protected] => stdClass Object
                        (
                            [menu_display_special] => 1
                        )
                )
            [parent_id] => 2376
            [parent] => 
        )

    [36] => Joomla\CMS\Menu\MenuItem Object
        (
            [id] => 2377
            [params:protected] => Joomla\Registry\Registry Object
                (
                    [data:protected] => stdClass Object
                        (
                        )
                )
            [parent_id] => 2376
            [parent] => 1
        )

    [37] => Joomla\CMS\Menu\MenuItem Object
        (
            [id] => 2379
            [params:protected] => Joomla\Registry\Registry Object
                (
                    [data:protected] => stdClass Object
                        (
                            [menu_display_special] => 1
                        )
                )
            [parent_id] => 2377
            [parent] => 
        )

    [38] => Joomla\CMS\Menu\MenuItem Object
        (
            [id] => 2380
            [params:protected] => Joomla\Registry\Registry Object
                (
                    [data:protected] => stdClass Object
                        (
                            [menu_display_special] => 1
                        )
                )
            [parent_id] => 2377
            [parent] => 
        )

    [39] => Joomla\CMS\Menu\MenuItem Object
        (
            [id] => 2381
            [params:protected] => Joomla\Registry\Registry Object
                (
                    [data:protected] => stdClass Object
                        (
                            [menu_display_special] => 1
                        )
                )
            [parent_id] => 2377
            [parent] => 
        )

    [40] => Joomla\CMS\Menu\MenuItem Object
        (
            [id] => 2378
            [params:protected] => Joomla\Registry\Registry Object
                (
                    [data:protected] => stdClass Object
                        (
                        )
                )
            [parent_id] => 2376
            [parent] =>
        )

)

var_export之后的代码：

array (
  35 => 
  Joomla\CMS\Menu\MenuItem::__set_state(array(
     'id' => '2375',
     'params' =>     
    Joomla\Registry\Registry::__set_state(array(
       'data' => 
      stdClass::__set_state(array(
         'menu_display_special' => '1',
      )),
    )),
     'parent_id' => '2376',
     'parent' => false,
  )),
  36 => 
  Joomla\CMS\Menu\MenuItem::__set_state(array(
     'id' => '2377',
     'params' => 
    Joomla\Registry\Registry::__set_state(array(
       'data' => 
      stdClass::__set_state(array(        
         'menu_display_special' => '1',
      )),
    )),    
     'parent_id' => '2376',
     'parent' => true,     
  )),
  37 => 
  Joomla\CMS\Menu\MenuItem::__set_state(array(
     'id' => '2379',
     'params' => 
    Joomla\Registry\Registry::__set_state(array(
       'data' => 
      stdClass::__set_state(array(
         'menu_display_special' => '1',
      )),
    )),
     'parent_id' => '2377',
     'parent' => false,
  )),
  38 => 
  Joomla\CMS\Menu\MenuItem::__set_state(array(
     'id' => '2380',
     'params' => 
    Joomla\Registry\Registry::__set_state(array(
       'data' => 
      stdClass::__set_state(array(        
         'menu_display_special' => '1',
      )),
    )),
     'parent_id' => '2377',
     'parent' => false,
  )),
  39 => 
  Joomla\CMS\Menu\MenuItem::__set_state(array(
     'id' => '2381',
     'params' => 
    Joomla\Registry\Registry::__set_state(array(
       'data' => 
      stdClass::__set_state(array(        
      )),
    )),
     'parent_id' => '2377',
     'parent' => false,
  )),
  40 => 
  Joomla\CMS\Menu\MenuItem::__set_state(array(
     'id' => '2378',
     'params' => 
    Joomla\Registry\Registry::__set_state(array(
       'data' => 
      stdClass::__set_state(array(
      )),
    )),
     'parent_id' => '2376',
     'parent' => false,
  )),
)

编码尝试：但是它返回2个数组元素，即2381和2378。它应该只给我2378，因为2381是2377的子元素（其menu_display_special值为1）

 $listArray = array_filter($list, 
        function($v) use($list) { 
            return $v->params->get('menu_display_special') != '1' && ($v->parent == TRUE || $list[$v->parent_id]['params']['menu_display_special'] != '1');
        }
 );

Answer 1

我不确定您的设计要求是否允许我在递归函数中合并条件，因此我将它们分开以尝试最终准确。

没有返回值，在$array之前加一个&，以使其修改最初传递的输入数组。

代码（Demo）

function recurse(&$array, $pid = null) {
    foreach ($array as $id => $item) {
        if (isset($item->params->data->menu_display_special) && $item->params->data->menu_display_special == 1) { 
            unset($array[$id]);
            recurse($array, $item->id);
        } elseif ($item->parent_id === $pid) {
            unset($array[$id]);
        }
    }
}    

$list = [
    35 => (object)[
        'id' => '2375',
        'params' => (object)[ 
            'data' => (object)[
                'menu_display_special' => '1'
            ]
        ],
        'parent_id' => '2376',
        'parent' => false
    ],
    36 => (object)[
        'id' => '2377',
        'params' => (object)[ 
            'data' => (object)[
                'menu_display_special' => '1'
            ]
        ],
        'parent_id' => '2376',
        'parent' => false
    ],
    37 => (object)[
        'id' => '2379',
        'params' => (object)[ 
            'data' => (object)[
                'menu_display_special' => '1'
            ]
        ],
        'parent_id' => '2377',
        'parent' => false
    ],
    38 => (object)[
        'id' => '2380',
        'params' => (object)[ 
            'data' => (object)[
                'menu_display_special' => '1'
            ]
        ],
        'parent_id' => '2377',
        'parent' => false
    ],
    39 => (object)[
        'id' => '2381',
        'params' => (object)[ 
            'data' => (object)[]
        ],
        'parent_id' => '2377',
        'parent' => false
    ],
    40 => (object)[
        'id' => '2378',
        'params' => (object)[ 
            'data' => (object)[]
        ],
        'parent_id' => '2376',
        'parent' => false
    ],
];

recurse($list);
var_export($list);

输出：

array (
  40 => 
  (object) array(
     'id' => '2378',
     'params' => 
    (object) array(
       'data' => 
      (object) array(
      ),
    ),
     'parent_id' => '2376',
     'parent' => false,
  ),
)

PHP在多个条件下删除多维数组键

1 个答案: