3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = "hi"; boolval($var); echo PHP_EOL; echo $var; echo PHP_EOL; $new = (bool) $var; echo PHP_EOL; echo $new;
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
hi 1
preferences:
177.9 ms | 404 KiB | 227 Q