在PHP中将数组插入json编码数组

$newData = array(
    "name" => "John",
    "age" => 25,
    "city" => "New York"
);

// 假设现有的JSON编码数组为 $jsonArray
$jsonArray = '{
    "users": [
        {
            "name": "Alice",
            "age": 30,
            "city": "London"
        },
        {
            "name": "Bob",
            "age": 35,
            "city": "Paris"
        }
    ]
}';

// 将JSON编码数组解码为关联数组
$decodedArray = json_decode($jsonArray, true);

// 将新的数据合并到关联数组中
$decodedArray['users'][] = $newData;

// 将合并后的数组重新编码为JSON格式
$newJsonArray = json_encode($decodedArray);

echo $newJsonArray;