3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(strlen(DIRECTORY_SEPARATOR));
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
int(1)
preferences:
50.24 ms | 406 KiB | 5 Q