如何破滅

Question

我試圖破滅這個數組多維數組：

$name; 
foreach ($childs as $cval) { 
    $name[] = $cval; 
} 

這裏是我得到：

Array 
(
[0] => Array 
    (
     [0] => Array 
      (
       [pages_name] => services child 1 
      ) 

     [1] => Array 
      (
       [pages_name] => services child 2 
      ) 

    ) 

[1] => Array 
    (
     [0] => Array 
      (
       [pages_name] => inner service child 1 
      ) 

     [1] => Array 
      (
       [pages_name] => inner service child 2 
      ) 

    ) 

[2] => Array 
    (
     [0] => Array 
      (
       [pages_name] => gallery child 1 
      ) 

     [1] => Array 
      (
       [pages_name] => gallery child 2 
      ) 

    ) 

) 

我與array_map這樣做的：

$arr = array_map(function($el){ return $el['pages_name']; }, $name); 

$str = implode(',', $arr); 

而且我得到了這個錯誤：

Undefined index: pages_name 

Answer 1

你已經忘記了一個深度級別，試試這個：

$arr = array_map(function($el){ return $el[0]['pages_name']; }, $name);