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mb_encode_mimeheader
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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 [, string indent]]]] )

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_mimeheader() 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.

Example 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;
?>

Note: 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.

The indent was added as of PHP 5.

See also mb_decode_mimeheader().

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