PHP 8.1 Array of Objects: advanced patterns with array_filter and Instance Methods
I've been banging my head against this for hours. I've been banging my head against this for hours. I'm optimizing some code but I'm sure I'm missing something obvious here, but I'm experiencing unexpected behavior when using `array_filter` on an array of objects in PHP 8.1. I have a class `User` with a method `isActive()` that returns a boolean indicating whether the user is active. Here's how I've set it up: ```php class User { private $active; public function __construct($active) { $this->active = $active; } public function isActive() { return $this->active; } } $users = [ new User(true), new User(false), new User(true), ]; ``` When I try to filter the active users like this: ```php $activeUsers = array_filter($users, function($user) { return $user->isActive(); }); ``` I expect to get an array containing only the active users, but the result is that I still get an array with all the original user objects, and not just the active ones. I also noticed that if I print the output of `$activeUsers`, it shows that the array is not empty, but it still contains all the objects: ```php var_dump($activeUsers); ``` This outputs: ``` array(3) { [0] => User Object(...), [1] => User Object(...), [2] => User Object(...) } ``` I checked my `isActive()` method, and it works as expected when called individually on user objects. I also tried using a simple closure instead of the method call: ```php $activeUsers = array_filter($users, function($user) { return $user->active; // Directly accessing the private property (not allowed) }); ``` This throws a visibility behavior. Iām puzzled why `array_filter` isn't returning the expected results. Am I missing something or doing something wrong here? Is there a best practice for filtering an array of objects in this way? My development environment is Ubuntu. Thanks in advance! This is my first time working with Php 3.11. What's the best practice here? This is part of a larger microservice I'm building. Thanks for any help you can provide!