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<mb_internal_encodingmb_lcfirst>
^Multibyte String FunctionsLast updated: Mon, 26 Oct 2026

mb_language

(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)

mb_language — Set/Get current language

Description

function mb_language(?string $language = null): string|bool

Set/Get the current language.

Parameters

language

Used 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  

Return Values

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.

Changelog

Version Description
8.0.0 language is nullable now.

See Also


<mb_internal_encodingmb_lcfirst>
^Multibyte String FunctionsLast updated: Mon, 26 Oct 2026