(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
mb_encode_mimeheader — Encode string for MIME header
$string,$charset = null,$transfer_encoding = null,$newline = "\r\n",$indent = 0
Encodes a given string
string by the MIME header encoding scheme.
stringThe string being encoded. Its encoding should be same as mb_internal_encoding().
charset
charset specifies the name of the character set
in which string is represented in. The default value
is determined by the current NLS setting (mbstring.language).
transfer_encoding
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.
newline
newline 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.
indent
Indentation of the first line (number of characters in the header
before string).
A converted version of the string represented in ASCII.
| Version | Description |
|---|---|
| 8.0.0 |
charset and transfer_encoding
are nullable now.
|
Example #1 mb_encode_mimeheader() example
<?php
$name = "太郎"; // kanji
$mbox = "kru";
$doma = "gtinn.mon";
$addr = '"' . addcslashes(mb_encode_mimeheader($name, "UTF-7", "Q"), '"') . '" <' . $mbox . "@" . $doma . ">";
echo $addr;
?>The above example will output:
"=?UTF-7?Q?+WSqQzg-?=" <kru@gtinn.mon>
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.