advanced patterns with PHP 8.1 and JSON encoding of associative arrays with numeric keys
I'm working on a personal project and I'm working with an scenario in PHP 8.1 where JSON encoding of an associative array with numeric keys is producing unexpected results. I have the following array: ```php $data = [ 'name' => 'John', 'age' => 30, 1 => 'value1', 2 => 'value2', ]; ``` When I use `json_encode($data)`, I expect to see all keys included in the output. However, the resulting JSON looks like this: ```json {"name":"John","age":30} ``` It appears that the numeric keys `1` and `2` are being ignored in the output. I've tried using different options with `json_encode`, such as `JSON_PRETTY_PRINT` and `JSON_NUMERIC_CHECK`, but the numeric keys still do not show up in the final JSON string. I also checked the PHP documentation, and it states that numeric keys in associative arrays should be preserved in the output. I can’t see any clear reason why this is happening. I have tested it in both a local environment and a production server with the same results. Is there something specific I am missing or a setting that needs to be adjusted? Any help would be greatly appreciated! This is part of a larger web app I'm building. Is there a better approach?