Supported Character Encodings
 
  Currently the following character encodings are supported by the
  mbstring module. Any of those Character encodings
  can be specified in the encoding parameter of
  mbstring functions.
 
 
  The following character encodings are supported in this PHP
  extension: 
 
 
  - 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-7
- UTF7-IMAP
- UTF-8*
- ASCII*
- EUC-JP*
- SJIS*
- eucJP-win*
- SJIS-win*
- ISO-2022-JP
- ISO-2022-JP-MS
- CP932
- CP51932
- SJIS-mac** (alias: MacJapanese)
- SJIS-Mobile#DOCOMO** (alias: SJIS-DOCOMO)
- SJIS-Mobile#KDDI** (alias: SJIS-KDDI)
- SJIS-Mobile#SOFTBANK** (alias: SJIS-SOFTBANK)
- UTF-8-Mobile#DOCOMO** (alias: UTF-8-DOCOMO)
- UTF-8-Mobile#KDDI-A**
- UTF-8-Mobile#KDDI-B** (alias: UTF-8-KDDI)
- UTF-8-Mobile#SOFTBANK** (alias: UTF-8-SOFTBANK)
- ISO-2022-JP-MOBILE#KDDI** (alias: ISO-2022-JP-KDDI)
- JIS
- JIS-ms
- CP50220
- CP50220raw
- CP50221
- CP50222
- 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*
- byte2be
- byte2le
- byte4be
- byte4le
- BASE64
- HTML-ENTITIES
- 7bit
- 8bit
- EUC-CN*
- CP936
- GB18030**
- HZ
- EUC-TW*
- CP950
- BIG-5*
- EUC-KR*
- UHC (CP949)
- ISO-2022-KR
- Windows-1251 (CP1251)
- Windows-1252 (CP1252)
- CP866 (IBM866)
- KOI8-R*
  * denotes encodings usable also in regular expressions.
 
 
  ** denotes encodings available since PHP 5.4.0.
 
 
  Any php.ini entry which accepts an encoding name
  can also use the values "auto" and
  "pass".
  mbstring functions which accept an encoding
  name can also use the value "auto".
 
 
  If "pass" is set, no character
  encoding conversion is performed.
 
 
  If "auto" is set, it is expanded to
  the list of encodings defined per the NLS.
  For instance, if the NLS is set to Japanese,
  the value is assumed to be
  "ASCII,JIS,UTF-8,EUC-JP,SJIS".
 
 
  See also mb_detect_order()