1、php 能处理的字符编码
$cc = 'pass auto wchar byte2be byte2le byte4be byte4le BASE64 UUENCODE HTML-ENTITIES Quoted-Printable 7bit 8bit UCS-4 UCS-4BE UCS-4LE UCS-2 UCS-2BE UCS-2LE UTF-32 UTF-32BE UTF-32LE UTF-16 UTF-16BE UTF-16LE UTF-8 UTF-7 UTF7-IMAP ASCII EUC-JP SJIS eucJP-win SJIS-win CP51932 JIS ISO-2022-JP ISO-2022-JP-MS Windows-1252 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 EUC-CN CP936 HZ EUC-TW BIG-5 EUC-KR UHC ISO-2022-KR Windows-1251 CP866 KOI8-R ArmSCII-8 GBK GB2312 BIG5';
2、检测字符的编码格式
// $encode = mb_detect_encoding($vv, array("ASCII","UTF-8","GB2312","GBK","BIG5"));
3、将已经知道的编码格式转化为 utf8
// $vv = iconv($encode, 'UTF-8//TRANSLIT//IGNORE', $vv);
/4、直接转化为utf8
$vv = utf8_encode($vv);