3v4l.org

run code in 300+ PHP versions simultaneously
<?php setlocale(LC_ALL, "en_US.utf8"); var_dump(escapeshellarg("\xc3\xbf"));
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(4) "'ΓΏ'"

preferences:
154.24 ms | 402 KiB | 150 Q