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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(1) "?"
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30
string(0) ""
preferences:
128.5 ms | 402 KiB | 121 Q