3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( $conv = mb_convert_encoding( $bin = hex2bin("00"), "UTF-8", "ISO-2022-KR" ), mb_check_encoding($bin, "ISO-2022-KR"), bin2hex(mb_convert_encoding($conv, "ISO-2022-KR", "UTF-8")) );
preferences:
42.75 ms | 402 KiB | 5 Q