Php 阵列合并与阵列1和x2B之间的折衷；阵列2

我想合并两个数组，覆盖重复的键，但不想重新索引所有索引。有什么功能可以做到这一点吗

我需要两者的联合结构，因此每个键中包含哪些内容并不重要

数组1:

[820]
   [name1]
      [id] = "My Name"
   [name2]
      [id] = "Your Name"
[830]
   [id] = "Mothers Name"

[815]
   [name1]
      [id] = "IDs Name"
[820]
   [name1]
      [id] = "Names Name"
   [id] = "Last ID ID"

数组2:

[820]
   [name1]
      [id] = "My Name"
   [name2]
      [id] = "Your Name"
[830]
   [id] = "Mothers Name"

[815]
   [name1]
      [id] = "IDs Name"
[820]
   [name1]
      [id] = "Names Name"
   [id] = "Last ID ID"

结果应该是

[815]
   [name1]
      [id] = //does not matter
[820]
   [name1]
      [id] = //does not matter
   [name2]
      [id] = //does not matter
   [id] = //does not matter
[830]
   [id] = //does not matter