3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { protected $installationDependent = true; public static function m() { //return static::$installationDependent; } } class b extends a { protected $installationDependent = false; } var_dump(a::m()); var_dump(b::m());
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
NULL NULL

preferences:
219.98 ms | 404 KiB | 194 Q