3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Foo { readonly string $bar; public function __construct( readonly int $promotedProp ) { $this->bar = 'bar'; var_dump($this->promotedProp, $this->bar); } } new Foo(10);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.5 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.6
int(10) string(3) "bar"
Output for 8.0.1 - 8.0.28
Parse error: syntax error, unexpected identifier "readonly", expecting "function" or "const" in /in/nli62 on line 5
Process exited with code 255.
preferences:
51.53 ms | 946 KiB | 4 Q