如何在PHP中推送重复条目？

Question

Following is an object:

$obj = (object) [];
$obj->{'key1'} = 'val1';

Now, how do I push a key with same name but different value?

$obj = (object) [];
$obj->{'key1'} = 'val1';
$obj->{'key1'} = 'val2';

It just edits the key1. I know this is an expected behavior but do we have other workarounds?

I want the schema to be like:

"collection": {
    "obj1": "val1",
    "obj1": "val2"
}

Answer 1

You can map the values in an array with "key1" as key:

$obj = (object) [];
$obj->key1 = ['val1', 'val2'];

Output:

{#183 ▼
  +"key1": array:2 [▼
    0 => "val1"
    1 => "val2"
  ]
}

Now, you can easily traverse for "key1" and get all the values.

Thanks!