重命名JSON对象属性，但保持其在PHP中的位置

Question

I have a JSON object that looks something like so:

$jsonObj = {
    "groups": {
        "first" : {...},
        "second: {
            "Old Name" : {...},
            "others": {...}
        },
        "third": {...}
    }
};

I want to change the property name "Old Name" to "New Name" but keep it as first property in its parent ("second"). Is it possible to achieve it?

(of course I can assign a new property to "second" and unset the old one but that will position it at the end of the object and that's not the result I'm looking for).

Answer 1

position in json is undetermined so it is an unordered collection of properties...