What are the best practices for handling conflicts with native PHP functions in newer versions like 5.3?

In newer versions of PHP like 5.3, conflicts with native PHP functions can occur when user-defined functions have the same name as built-in PHP functions. To handle this issue, it is best practice to namespace your functions to avoid conflicts. By using namespaces, you can organize your functions and avoid naming collisions with PHP's built-in functions.

<?php

namespace MyNamespace;

function myFunction() {
    // Your custom function code here
}

// Call your custom function using the namespace
MyNamespace\myFunction();