<?php
$str1 = hex2bin('e58da0e6a5bc');
$str2 = hex2bin('d5bcc2a5');
var_dump(mb_detect_encoding($str1, 'CP936', true));
var_dump(mb_detect_encoding($str1, 'EUC-CN', true));
var_dump(mb_detect_encoding($str1, 'UTF-8', true));
var_dump(mb_detect_encoding($str2, 'CP936', true));
var_dump(mb_detect_encoding($str2, 'EUC-CN', true));
var_dump(mb_detect_encoding($str2, 'UTF-8', true));
preferences:
50.07 ms | 402 KiB | 5 Q