Question

我有这个多维数组：

[0] => Array (
    [id] => 1
    [name] => Ropa
    [slug] => ropa
    [lft] => 1
    [lvl] => 0
    [rgt] => 2
    [__children] =>       Array ( )
    )
[1] => Array (
    [id] => 3
    [name] => Calzado
    [slug] => calzado
    [lft] => 1
    [lvl] => 0
    [rgt] => 8
    [__children] => Array (
        [0] => Array (
            [id] => 10
            [name] => Zapatos y botas
            [slug] => zapatos-y-botas
            [lft] => 2
            [lvl] => 1
            [rgt] => 3
            [__children] =>       Array ( )
            )
        [1] => Array (
            [id] => 11
            [name] => Zapatillas
            [slug] => zapatillas
            [lft] => 4
            [lvl] => 1
            [rgt] => 7
            [__children] => Array (
                [0] => Array (
                    [id] => 14
                    [name] => Zapatillas rojas
                    [slug] => zapatillas-rojas
                    [lft] => 5
                    [lvl] => 2
                    [rgt] => 6
                    [__children] =>       Array ( )
                    )
                )
            )
        )
    )
[2] => Array (
    [id] => 13
    [name] => Accesorios
    [slug] => accesorios
    [lft] => 1
    [lvl] => 0
    [rgt] => 2
    [__children] =>       Array ( )
    )

我可以使用以下方法过滤数组的第一级节点：

    $foobar = array_filter($navbar, function($value) {
          return $value['slug'] == 'accesorios' || $value['slug'] == 'ropa';           
    });

所以我明白了：

array (size=2)
  0 => 
    array (size=7)
      'id' => int 1
      'name' => string 'Ropa' (length=4)
      'slug' => string 'ropa' (length=4)
      'lft' => int 1
      'lvl' => int 0
      'rgt' => int 2
      '__children' => 
        array (size=0)
          empty
  2 => 
    array (size=7)
      'id' => int 13
      'name' => string 'Accesorios' (length=10)
      'slug' => string 'accesorios' (length=10)
      'lft' => int 1
      'lvl' => int 0
      'rgt' => int 2
      '__children' => 
        array (size=0)
          empty

但是当我尝试使用它来过滤第二级或第三级节点时，例如：

    $foobar = array_filter($navbar, function($value) {
          return $value['slug'] == 'zapatillas';           
    });

我得到空结果..那么如何在第二个或第三个数组中过滤？

Answer 1

如果要返回包含该值的完整数组，可以使用以下命令：

$foobar = array_filter($navbar, function($value) {
     //return true if child slug key contains zapatillas as a value
     return in_array('zapatillas', array_column($value['__children'], 'slug'));
});

Answer 2

可能会有所帮助并且与您的问题有关。据我所知，这是你失踪的递归吗？ https://stackoverflow.com/a/6795671/2660253

Answer 3

$foobar = array_filter($navbar, function($value) { foreach($value as $val) {
return $val['slug'] == 'zapatillas'; }
});

array_filter（）只是过滤根节点

3 个答案: