3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Clazz { public ?int $foo; public function __construct(int $foo) { $this->foo = $foo; } } $class = new Clazz(1); unset($class->foo); echo $class->foo;
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Fatal error: Uncaught Error: Typed property Clazz::$foo must not be accessed before initialization in /in/V8uuP:16 Stack trace: #0 {main} thrown in /in/V8uuP on line 16
Process exited with code 255.
preferences:
83.93 ms | 407 KiB | 5 Q