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# mb_encode_mimeheader

(PHP 4 >= 4.0.6, PHP 5)

mb_encode_mimeheader -- Encode string for MIME header

## Description

string mb_encode_mimeheader ( string str [, string charset [, string transfer-encoding [, string linefeed]]])

mb_encode_mimeheader() encodes a given string `str` by the MIME header encoding scheme. Returns a converted version of the string represented in ASCII.

`charset` specifies the name of the character set in which `str` is represented in. The default value is determined by the current NLS setting (`mbstring.language`).

`transfer-encoding` specifies the scheme of MIME encoding. It should be either `"B"` (Base64) or `"Q"` (Quoted-Printable). Falls back to `"B"` if not given.

`linefeed` specifies the EOL (end-of-line) marker with which mb_encode_mime_header() performs line-folding (a RFC term, the act of breaking a line longer than a certain length into multiple lines. The length is currently hard-coded to 74 characters). Falls back to `"\r\n"` (CRLF) if not given.

Beispiel 1. mb_encode_mimeheader() example
`<?php $name = ""; // kanji $mbox = "kru"; $doma = "gtinn.mon"; $addr = mb_encode_mimeheader($name, "UTF-7", "Q") . " <" . $mbox . "@" . $doma . ">"; echo $addr; ?>`

> Anmerkung: This function isn't designed to break lines at higher-level contextual break points (word boundaries, etc.). This behaviour may clutter up the original string with unexpected spaces.

See also mb_decode_mimeheader().

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