<?php
var_dump(mb_detect_encoding("\x19", "ASCII", true));
var_dump(mb_detect_encoding("\x20", "ASCII", true));
var_dump(mb_detect_encoding("\x21", "ASCII", true));
var_dump(mb_detect_encoding("\xA1", "ASCII", true));
var_dump(mb_detect_encoding("\x19", "7bit", true));
var_dump(mb_detect_encoding("\x20", "7bit", true));
var_dump(mb_detect_encoding("\x21", "7bit", true));
var_dump(mb_detect_encoding("\xA1", "7bit", true));
var_dump(mb_detect_encoding("\x19", "8bit", true));
var_dump(mb_detect_encoding("\x20", "8bit", true));
var_dump(mb_detect_encoding("\x21", "8bit", true));
var_dump(mb_detect_encoding("\xA1", "8bit", true));
preferences:
44.76 ms | 402 KiB | 5 Q