What are the best practices for handling errors and warnings when refactoring code that uses create_function?

When refactoring code that uses create_function in PHP, it is important to handle errors and warnings that may arise due to changes in the code structure. One way to address this is by using anonymous functions instead of create_function, as they provide better error handling and are more readable. Additionally, it is recommended to use try-catch blocks to catch any exceptions that may occur during the refactoring process.

// Example of refactoring code using create_function to use anonymous functions with error handling

// Before refactoring
$callback = create_function('$a, $b', 'return $a + $b;');
$result = $callback(1, 2);

// After refactoring
$callback = function($a, $b) {
    return $a + $b;
};

try {
    $result = $callback(1, 2);
    // Handle success case
} catch (Exception $e) {
    // Handle error case
    echo 'Error: ' . $e->getMessage();
}