How can namespaces be utilized to logically group classes and improve project organization in PHP?

Namespaces in PHP can be utilized to logically group classes and improve project organization by preventing naming conflicts and providing a clear structure for classes. By defining namespaces for classes, functions, and constants, developers can organize their code more efficiently and avoid conflicts with similarly named elements from external libraries or frameworks.

// Define a namespace for a group of classes
namespace MyProject;

class MyClass
{
    // Class implementation
}

// Accessing the class within the defined namespace
$obj = new MyProject\MyClass();