我有两个数组(相同型号),如下所示:
Array (
[0] => Array (
[id] => 17
[user_id] => 1
)
[1] => Array (
[id] => 8
[user_id] => 1
)
[2] => Array (
[id] => 9
[user_id] => 1
)
)
和
Array (
[0] => Array (
[Post] => Array (
[id] => 9
[name] => name1
[slug] => slug1
)
)
[1] => Array (
[Post] => Array (
[id] => 17
[name] => other name
[slug] => other_slug
)
)
[2] => Array (
[Post] => Array (
[id] => 8
[name] => lorem
[slug] => lorem_slug
)
)
)
如何按字段
id
合并这两个数组,格式与第一个数组相同?
我仍在寻找一种更优雅的解决方案,但这似乎可行。
$a1 = [
['id' => 17, 'user_id' => 1],
['id' => 8, 'user_id' => 2],
['id' => 9, 'user_id' => 3],
];
$a2 = [
['Post' => ['id' => 9, 'name' => 'name1', 'slug' => 'slug1']],
['Post' => ['id' => 17, 'name' => 'other name', 'slug' => 'other_slug']],
['Post' => ['id' => 8, 'name' => 'lorem', 'slug' => 'lorem_slug']],
];
$a2 = Hash::extract($a2, '{n}.Post');
foreach ($a1 as $key => $value) {
$a1['id_' . $value['id']] = $value;
unset($a1[$key]);
}
foreach ($a2 as $key => $value) {
$a2['id_' . $value['id']] = $value;
unset($a2[$key]);
}
$a3 = array_values(array_replace_recursive($a1, $a2));
debug($a3);
第二种更简单的方法:
foreach ($a1 as &$item) {
foreach ($a2 as $item2) {
if ($item2['Post']['id'] == $item['id']) {
$item = array_merge($item, $item2['Post']);
}
}
}
我现在用的是这样的:
foreach ($a1 as $order => $result) {
$a1[$order] = array_merge($a1[$order], current(Hash::extract($a2, '{n}.Post[id=' . $result['id'] . ']')));
}