Anonymous Functions

Anonymous functions are functions without a name.
They are often used for short tasks, callbacks, or when passing functions as arguments.

Anonymous functions are also called closures.

Basic Example

$greet = function () {
    echo "Hello World";
};

$greet();

Anonymous Function with Parameters

$add = function ($a, $b) {
    return $a + $b;
};

echo $add(5, 3);

Using Variables from Outside

The use keyword allows access to variables from the parent scope.

$message = "Hello";

$printMessage = function () use ($message) {
    echo $message;
};

$printMessage();