PHP 7.4 Typed Properties examples. Try it now : https://3v4l.org/iFsCM

gist.php

<?php
# Typed Properties 2.0

# OLD WAY (PHP < 7.4 )
class User {
	public $id;
	public $name;
	
	public function __construct(int $id, string $name) {
	    $this->id = $id;
	    $this->name = $name;
	}
}

$user = new User(10, []); // This Will throw a Fatal error.

# Typed Properties with PHP 7.4 All types are supported, with the exception of void and callable.
class NewUser {
	public int $id;
	public string $name;
}

$newUser = new NewUser;
$newUser->id = 10;
$newUser->name = []; // This Will throw a Fatal error too !!