<?php
$test = 'test:test';
$encodings = ['UTF-8', 'SJIS', 'GB2312',
'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4',
'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9',
'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16',
'WINDOWS-1252', 'WINDOWS-1251', 'EUC-JP', 'EUC-TW', 'KOI8-R', 'BIG-5',
'ISO-2022-KR', 'ISO-2022-JP', 'UTF-16'
];
echo mb_detect_encoding($test, $encodings);
preferences:
49.82 ms | 402 KiB | 5 Q