How can anonymous functions be used to replace create_function in PHP code?

Anonymous functions can be used to replace the create_function function in PHP code by defining the function inline without a name. This can help improve code readability and maintainability by keeping the function definition closer to where it is used. Anonymous functions can be assigned to variables or passed directly as arguments to other functions, providing a more flexible and modern approach to creating dynamic functions in PHP.

// Using anonymous function to replace create_function
$callback = function($a, $b) {
    return $a + $b;
};

$result = $callback(2, 3);
echo $result; // Output: 5