Online PHP editor | output for 0cT8r

<?php declare(strict_types=1); error_reporting(E_ALL); trait NumberSettingConstructor { public function __construct() { $this->number = 1234; } public function __set($name, $value) { printf("UNEXPECTED SETTING OF %s\n", $name); } } class ClassWithTypedProperty { public int $number; use NumberSettingConstructor; } class ClassWithInitializedTypedProperty { public int $number = 0; use NumberSettingConstructor; } class ClassWithTraditionalProperty { public $number; use NumberSettingConstructor; } printf("\n--- Typed Property ---\n"); print_r(new ClassWithTypedProperty()); printf("\n--- Typed Property (with Initialization) ---\n"); print_r(new ClassWithInitializedTypedProperty()); printf("\n--- Traditional Untyped Property ---\n"); print_r(new ClassWithTraditionalProperty());