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
)
)
我将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
)
)
提前感谢您提供有关如何实现这一目标的任何帮助.
是的,在这种情况下你可以使用array_merge：
$a = array('a' => 'some value','z' => 'some more value');
$d = array($a,$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);
编辑：另一种方法是使用与空配对的键创建密钥对值,然后映射每个$d并合并：
$keys = array_keys(call_user_func_array('array_merge',$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);
