3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { readonly int $foo; public function unset_me() { unset( $this->foo ); } public function __set($key, $value) { echo "__set called with {$value}\n"; } } $f = new Foo; $f->unset_me(); $f->foo = 43;
Output for 8.1.13 - 8.1.34, 8.2.22 - 8.2.30, 8.3.5 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
__set called with 43

preferences:
50.74 ms | 724 KiB | 4 Q