What are some best practices for structuring code to make debugging easier when dealing with complex PHP applications?

When dealing with complex PHP applications, it is essential to structure your code in a way that makes debugging easier. One best practice is to use proper indentation and formatting to make the code more readable. Additionally, breaking down your code into smaller, modular functions can help isolate and identify issues more efficiently. Finally, incorporating error handling mechanisms such as try-catch blocks can help catch and handle exceptions effectively.

// Example of proper code structuring for easier debugging
try {
    // Code logic here
    $result = someFunction();
    if ($result === false) {
        throw new Exception('Error occurred in someFunction');
    }
} catch (Exception $e) {
    echo 'Caught exception: ' . $e->getMessage();
}