3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Example { const FOO = 'bar'; public function __construct($b) { define('BAR', 'foo'); $this->FOO = $b; } } $example = new Example('hippy'); var_dump($example::FOO);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Creation of dynamic property Example::$FOO is deprecated in /in/FdEOs on line 9 string(3) "bar"
Output for 5.6.0 - 5.6.26, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
string(3) "bar"
preferences:
155.57 ms | 403 KiB | 186 Q