How can namespaces and Composer simplify class resolution and organization in PHP projects?

Namespaces in PHP allow developers to organize classes into logical groupings, preventing naming conflicts and making it easier to locate and use classes within a project. Composer, a dependency manager for PHP, simplifies class resolution by automatically loading classes and their dependencies based on the project's composer.json file. By using namespaces and Composer together, developers can streamline class organization and resolution in PHP projects.

// Example of using namespaces and Composer in PHP

// composer.json
{
    "autoload": {
        "psr-4": {
            "MyNamespace\\": "src/"
        }
    }
}

// src/MyClass.php
namespace MyNamespace;

class MyClass {
    public function __construct() {
        // Constructor logic
    }
}

// index.php
require 'vendor/autoload.php';

use MyNamespace\MyClass;

$myClass = new MyClass();