3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(iconv_substr("a\x00b\x00", 0, 1, 'UTF-16LE')); var_dump(iconv_substr("\x00a\x00b", 0, 1, 'UTF-16BE'));

preferences:
25.16 ms | 404 KiB | 5 Q