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 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
string(1) "?"
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30
string(0) ""
preferences:
101.06 ms | 407 KiB | 5 Q