How can namespaces be effectively utilized in PHP to avoid naming collisions and improve code organization?

To avoid naming collisions and improve code organization in PHP, namespaces can be effectively utilized. By defining namespaces for classes, functions, and variables, you can encapsulate your code and prevent conflicts with similarly named elements from other libraries or packages. This helps in organizing your codebase and making it more maintainable.

// Define a namespace for your code
namespace MyNamespace;

// Use the namespace for classes, functions, and variables
class MyClass {
    // Class implementation
}

function myFunction() {
    // Function implementation
}

// Access elements within the namespace
$obj = new MyClass();
myFunction();