3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 2; var_dump(($var ?? false)); var_dump(true === ($var ?? false)); var_dump('------'); $var = false; var_dump(($var ?? false)); var_dump(true === ($var ?? false)); var_dump('------'); $var = true; var_dump(($var ?? false)); var_dump(true === ($var ?? false));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
int(2) bool(false) string(6) "------" bool(false) bool(false) string(6) "------" bool(true) bool(true)
preferences:
99.02 ms | 406 KiB | 5 Q