Hello, world.

Hello, world.

<?php

namespace TK;

class HelloWorld
{
    public static function sayHelloTo(string $name = 'world')
    {
        echo "Hello, {$name}.";
    }
}

HelloWorld::sayHelloTo();
HelloWorld::sayHelloTo('TK');

const sayHelloTo = function (name = "world") {
  return "Hello, " + name + ".";
};

console.log(sayHelloTo());
console.log(sayHelloTo("TK"));