How can PHP developers effectively handle error messages and exceptions in their code?

PHP developers can effectively handle error messages and exceptions in their code by using try-catch blocks to catch exceptions and handle them gracefully. They can also use error handling functions like set_error_handler() to customize error handling behavior. Additionally, logging errors to a file or database can help developers track and troubleshoot issues more effectively.

try {
    // code that may throw an exception
    throw new Exception("An error occurred");
} catch (Exception $e) {
    // handle the exception
    echo "Error: " . $e->getMessage();
}