从多维数组创建独特的数组？

Question

我有一个多维数组这有点儿像这样

Array 
(
    [0] => Array 
     (
      [id] => 140309 
      [headline] => Random title 
      [body] => 
      [title_generic] => 
      [text_generic] => 
     ) 

    [1] => Array 
     (
      [id] => 140309 
      [headline] => Random title 
      [body] => 
      [title_generic] => 
      [text_generic] => 
     ) 

    [2] => Array 
     (
      [id] => 140309 
      [headline] => Random title 
      [body] => 
      [title_generic] => 
      [text_generic] => 
     ) 

    [3] => Array 
     (
      [id] => 140309 
      [headline] => Random title 
      [body] => 
      [title_generic] => 
      [text_generic] => 
     ) 

    [4] => Array 
     (
      [id] => 140309 
      [headline] => Random title 
      [body] => 
      [title_generic] => Random title 
      [text_generic] => [b]This is Random title:[/b] 16 nov 2012 
     ) 

    [5] => Array 
     (
      [id] => 140309 
      [headline] => Random title 
      [body] => 
Some text goes here. Blaaaa 
      [title_generic] => 
      [text_generic] => 
     ) 

    [6] => Array 
     (
      [id] => 140309 
      [headline] => Random title 
      [body] => 
      [title_generic] => 
      [text_generic] => 
     ) 

) 

我试着用array_unique()过滤，但只返回

Array 
    (
     [0] => Array 
      (
       [id] => 140309 
       [headline] => Random title 
       [body] => 
       [title_generic] => 
       [text_generic] => 
      ) 
    ) 

但我想有

Array 
    (
     [0] => Array 
      (
       [id] => 140309 
       [headline] => Random title 
       [body] => 
       Some text goes here. Blaaaa 
       [title_generic] => Random title 
       [text_generic] => [b]This is Random title:[/b] 16 nov 2012 
      ) 
    ) 

即只返回全部填充的唯一字段。

在阵列中将只有一个唯一的填充空间，所以没有办法，在第一把钥匙我会有title_generic然后我会有不同的三分之一左右。 body和text_generic也是如此。它们在某些数组中只出现一次。但是ID，标题等都是一样的（里面有一个日期等等）。

有没有一个功能会做这样的事情？

编辑

我可能不太清楚。我想返回包含来自其他键（来自该键的数组中的值）的所有信息的数组，这些不同。所以在阵列中的前4个键中，我有与id,headline,body,title_generic和text_generic相同的阵列。他们有相同的标识和标题，其余都是空的。然后在下一个键中填入title_generic和text_generic，依此类推。

我需要将填补键，如

Array 
    (
     [0] => Array 
      (
       [id] => 140309 
       [headline] => Random title 
       [body] => 
       Some text goes here. Blaaaa 
       [title_generic] => Random title 
       [text_generic] => [b]This is Random title:[/b] 16 nov 2012 
      ) 
    ) 

或

Array 
(
    [id] => 140309 
    [headline] => Random title 
    [body] => 
    Some text goes here. Blaaaa 
    [title_generic] => Random title 
    [text_generic] => [b]This is Random title:[/b] 16 nov 2012 
) 

任一阵列，我不知道该如何解释这更好的...

Answer 1

$result = array_reduce($array, function (array $result, array $item) { 
    return array_filter($result) + $item; 
}, []); 

这可能会做你想做的事情（这有点不清楚）。

说明：它逐个检查您的每个项目;它会过滤所有空值，只留下已填充的密钥（array_filter）;然后它将所有不存在的密钥（+）从下一个项目添加到它（在array_reduce上阅读）。最终结果应该是一个数组，其中所有数组中的所有非空键合并为一个，并且该值是循环内遇到的第一个非空值。

Answer 2

我知道已经有一个解决方案。尽管如此，我想为您呈现一个轻量级的方法，其执行时间和功能相同。

# your data here 
$array = [ 
    [ 
     'id' => '123', 
     'headline' => 'one two three', 
     'body' => 'somebody', 
     'title_generic' => '', 
     'text_generic' => '', 
    ], 
    [ 
     'id' => '123', 
     'headline' => 'one two three', 
     'body' => null, 
     'title_generic' => 'title', 
     'text_generic' => 'text', 
    ], 
]; 

# the aggregate to be created 
$aggregate = []; 

foreach ($array as $el) { 
    if (empty($el)) continue; 

    foreach ($el as $k => $v) { 
     if (empty($v)) continue; 

     if (!isset($aggregate[$k])) { 
      $aggregate[$k] = $v; 
     } 
    } 
} 

# debug print 
echo '<pre>';print_r($aggregate);echo '<pre>'; 

# the output 
Array 
(
    [id] => 123 
    [headline] => one two three 
    [body] => somebody 
    [title_generic] => title 
    [text_generic] => text 
)