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*
ISO-8859-16*
byte2be
byte2le
byte4be
byte4le
BASE64
HTML-ENTITIES (alias: HTML)
7bit
8bit
EUC-CN*
CP936
GB18030**
HZ
EUC-TW*
CP950
BIG-5*
EUC-KR*
UHC (alias: CP949)
ISO-2022-KR
Windows-1251 (alias: CP1251)
Windows-1252 (alias: CP1252)
CP866 (alias: IBM866)
KOI8-R*
KOI8-U*
ArmSCII-8 (alias: ArmSCII8)

* 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".