3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Config { public const API_KEY = 'abc123'; public const SECRET_KEY = '123abc'; } var_dump(Config::API_KEY);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(6) "abc123"
preferences:
87.85 ms | 402 KiB | 89 Q