<?php

const ↪ = "\n";

interface 🔊 {
  public function 📝(string $📃): void;
}

final class 💻 implements 🔊 {
  public function 📝(string $📃): void {
    print($📃 . ↪);
  }
}

function 🚪(): void {
  $💻 = new 💻();
  $📄 = "hello, world";
  $💻->📝(📃: $📄);
}

🚪();

$var� = 1; echo $var�;