合并多数组 Laravel

Question

我有3个数组如下：

"promotion_news_id" => array:3 [▼
    0 => "ID1"
    1 => "ID2"
    2 => "ID3"
  ]

  "promotion_news_name" => array:3 [▼
    0 => "abc 1"
    1 => "abc 2"
    2 => "abc 3"
  ]

  "news_id" => array:3 [▼
    0 => "Title 1"
    1 => "Title 2
  ]

我想将这 3 个数组组合成 1 个数组，如下所示：

array:3 [▼
  0 => array:3 [▼
    'promotion_news_id' => "ID1"
    'promotion_news_name' => "abc 1"
    'news_id' => "Title 1"

  ]
  1 => array:3 [▼
    'promotion_news_id' => "ID2"
    'promotion_news_name' => "abc 2"
    'news_id' => "Title 2" 
  ],
  2 => array:3 [▼
    'promotion_news_id' => "ID3"
    'promotion_news_name' => "abc 3"
    'news_id' => "null"

  ]
]

我尝试但未能获得空值。 非常感谢任何帮助！非常感谢！

Answer 1

假设所有三个数组具有相同数量的元素，

$result = [];
foreach($promotion_news_id as $index => $value){
    $result[] = array(
        'promotion_news_id' => $value
        'promotion_news_name' => $promotion_news_name[$index]
        'news_id' => $news_id[$index]
    )
}

另外，不知道为什么你的空值是"null" 而不是null。前者只是一个字符串，而不是实际的空值。

Answer 2

用null代替"null"

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