3v4l.org

run code in 500+ PHP versions simultaneously
<?php class X { private const foo = 'bar'; public function __construct() { var_dump(self::foo === self:: foo); } } new X();
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
bool(true)

preferences:
71.4 ms | 1152 KiB | 4 Q