3v4l.org

run code in 300+ PHP versions simultaneously
<?php function retry($retries, callable $fn) { try { return $fn(); } catch (\Exception $e) { if (!$retries) { throw new FailingTooHardException('', 0, $e); } retry($retries - 1, $fn); } }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
preferences:
209.85 ms | 404 KiB | 385 Q