advanced patterns when using PHP's array_walk with references in Laravel 9
I'm migrating some code and I'm converting an old project and I'm relatively new to this, so bear with me. I'm stuck on something that should probably be simple. Quick question that's been bugging me - I'm having trouble with `array_walk` in PHP while trying to modify an array of user data in a Laravel 9 application. I expected the references to work as documented, but I'm not seeing the changes take effect on the original array. Here's the code snippet I'm using: ```php $users = [ ['id' => 1, 'name' => 'Alice'], ['id' => 2, 'name' => 'Bob'], ]; array_walk($users, function(&$user) { $user['name'] = strtoupper($user['name']); }); print_r($users); ``` When I run this code, I'm getting the output: ``` Array ( [0] => Array ( [id] => 1 [name] => Alice ) [1] => Array ( [id] => 2 [name] => Bob ) ) ``` It seems like the names aren't being updated to uppercase. I've double-checked that I'm passing the reference correctly using `&$user`, but it's not working as I expected. I've also tried this with both PHP 8.0 and 8.1, and the behavior remains the same. Is there something I'm missing here, or is this a known scenario with using `array_walk` in this context? Would switching to a different array manipulation method solve this question? This is part of a larger application I'm building. Has anyone else encountered this? My development environment is Linux. What's the best practice here? What's the best practice here? For reference, this is a production service. Hoping someone can shed some light on this. For context: I'm using Php on CentOS. I'd love to hear your thoughts on this. This is part of a larger mobile app I'm building. Am I approaching this the right way?