(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
mb_language — Set/Get current language
$language = null): string|boolSet/Get the current language.
languageUsed for encoding e-mail messages. The valid languages are listed in the following table. mb_send_mail() uses this setting to encode e-mail.
| Language | Charset | Encoding | Alias | 
|---|---|---|---|
| German/de | ISO-8859-15 | Quoted-Printable | Deutsch | 
| English/en | ISO-8859-1 | Quoted-Printable | |
| Armenian/hy | ArmSCII-8 | Quoted-Printable | |
| Japanese/ja | ISO-2022-JP | BASE64 | |
| Korean/ko | ISO-2022-KR | BASE64 | |
| neutral | UTF-8 | BASE64 | |
| Russian/ru | KOI8-R | Quoted-Printable | |
| Turkish/tr | ISO-8859-9 | Quoted-Printable | |
| Ukrainian/ua | KOI8-U | Quoted-Printable | |
| uni | UTF-8 | BASE64 | universal | 
| Simplified Chinese/zh-cn | HZ | BASE64 | |
| Traditional Chinese/zh-tw | BIG-5 | BASE64 | 
   If language is set and
   language is valid, it returns
   true. Otherwise, it returns false. 
   When language is omitted or null, it returns the language
   name as a string.
  
| Version | Description | 
|---|---|
| 8.0.0 | languageis nullable now. |