3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(mb_convert_encoding(mb_convert_encoding("~", "JIS", "UTF-16"), "UTF-8", "JIS"));
Output for 8.1.0 - 8.1.9
string(1) "?"
Output for 7.4.0 - 7.4.30, 8.0.1 - 8.0.22
string(0) ""

preferences:
32.57 ms | 410 KiB | 5 Q