PHP在数组之间添加缺少的键

我有以下代码：

$a = array('a' => 'some value', 'b' => 'some value', 'c' => 'some value');
$b = array('a' => 'another value', 'd' => 'another value', 'e' => 'another value', 'f' => 'another value');
$c = array('b' => 'some more value', 'x' => 'some more value', 'y' => 'some more value', 'z' => 'some more value');

$d = array($a, $b, $c);

打印

$d

将输出：

Array
(
    [0] => Array
        (
            [a] => some value
            [b] => some value
            [c] => some value
        )

    [1] => Array
        (
            [a] => another value
            [d] => another value
            [e] => another value
            [f] => another value
        )

    [2] => Array
        (
            [b] => some more value
            [x] => some more value
            [y] => some more value
            [z] => some more value
        )

)

如何组合数组键并最终得到以下输出

Array
(
    [0] => Array
        (
            [a] => some value
            [b] => some value
            [c] => some value
            [d] => 
            [e] => 
            [f] => 
            [x] => 
            [y] => 
            [z] => 
        )

    [1] => Array
        (
            [a] => another value
            [b] => 
            [c] => 
            [d] => another value
            [e] => another value
            [f] => another value
            [x] => 
            [y] => 
            [z] => 
        )

    [2] => Array
        (
            [a] => 
            [b] => some more value
            [c] => 
            [d] => 
            [e] => 
            [f] => 
            [x] => some more value
            [y] => some more value
            [z] => some more value
        )

)

---

提前感谢您对如何实现这一目标的帮助。

是的，在这种情况下，您可以使用

array\u merge

：

$a = array('a' => 'some value', 'b' => 'some value', 'c' => 'some value');
$b = array('a' => 'another value', 'd' => 'another value', 'e' => 'another value', 'f' => 'another value');
$c = array('b' => 'some more value', 'x' => 'some more value', 'y' => 'some more value', 'z' => 'some more value');

$d = array_merge(array_merge($a, $b),$c);

foreach($d as $k=>$v){
    $aN[$k] = isset($a[$k])?$a[$k]:''; 
    $bN[$k] = isset($b[$k])?$b[$k]:''; 
    $cN[$k] = isset($c[$k])?$c[$k]:''; 
}
$dN = array($aN, $bN, $cN );

$a = array('a' => 'some value', 'b' => 'some value', 'c' => 'some value');
$b = array('a' => 'another value', 'd' => 'another value', 'e' => 'another value', 'f' => 'another value');
$c = array('b' => 'some more value', 'x' => 'some more value', 'y' => 'some more value', 'z' => 'some more value');
$d = array($a, $b, $c);
$keys = array();
foreach(new RecursiveIteratorIterator(new RecursiveArrayIterator($d)) as $key => $val) $keys[$key] = '';
$data = array();
foreach($d as $values) {
    $data[] = array_merge($keys, $values);
}

echo '<pre>';
print_r($data);

---

这将是一个有趣的循环过山车。当我吸了一支烟，如果没有其他人吸过，我会回答的，然后初始化一个数组并合并它们@OleHaugset实际上不需要（手动）循环，但仍然不能给他上面发布的想要的结果。这只是将两个数组合并到一个数组中。在MultiArrayVM中没有空键，请第三次阅读问题：PNice。这给出了我所期望的结果。但对于真实场景，我有更多的数组和键。你能想到一种方法来自动化n个数组和n个键的处理吗？因为@Ghost的答案很好！是的，这正是我现在要检查的。无论如何谢谢你的帮助！完美的那正是我想要的。非常感谢你的帮助！

$keys = array_keys(call_user_func_array('array_merge', $d));
$key_pair = array_combine($keys, array_fill(0, count($keys), null));
$values = array_map(function($e) use ($key_pair) {
    return array_merge($key_pair, $e);
}, $d);