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iconv_mime_encode> <iconv_mime_decode_headers
[edit] Last updated: Fri, 22 Jul 2011

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iconv_mime_decode

(PHP 5)

iconv_mime_decodeDecodes a MIME header field

Description

string iconv_mime_decode ( string $encoded_header [, int $mode = 0 [, string $charset = ini_get("iconv.internal_encoding") ]] )

Decodes a MIME header field.

Parameters

encoded_header

The encoded header, as a string.

mode

mode determines the behaviour in the event iconv_mime_decode() encounters a malformed MIME header field. You can specify any combination of the following bitmasks.

Bitmasks acceptable to iconv_mime_decode()
Value Constant Description
1 ICONV_MIME_DECODE_STRICT If set, the given header is decoded in full conformance with the standards defined in » RFC2047. This option is disabled by default because there are a lot of broken mail user agents that don't follow the specification and don't produce correct MIME headers.
2 ICONV_MIME_DECODE_CONTINUE_ON_ERROR If set, iconv_mime_decode_headers() attempts to ignore any grammatical errors and continue to process a given header.

charset

The optional charset parameter specifies the character set to represent the result by. If omitted, iconv.internal_encoding will be used.

Return Values

Returns a decoded MIME field on success, or FALSE if an error occurs during the decoding.

Examples

Example #1 iconv_mime_decode() example

<?php
// This yields "Subject: Prüfung Prüfung"
echo iconv_mime_decode("Subject: =?UTF-8?B?UHLDvGZ1bmcgUHLDvGZ1bmc=?=",
                       
0"ISO-8859-1");
?>

See Also



add a note add a note User Contributed Notes iconv_mime_decode
dido dot sevilla at gmail dot com 09-Mar-2005 04:00
In PHP versions that have imap_mime_decode built in, it's possible to emulate the operation of this function:

<?php
function iconv_mime_decode($str, $mode=0, $charset="UTF-8")
{
   
$data = imap_mime_header_decode($str);
    if (
count($data) > 0) {
     
// because iconv doesn't like the 'default' for charset
     
$charset = ($data[0]->charset == 'default') ? 'ASCII' : $data[0]->charset;
      return(
iconv($charset, $charset, $data[0]->text));
    }
    return(
"");
 }
?>

I've only tried to use this code snippet to decode ISO-2022-JP messages to UTF-8, but I see no reason why it shouldn't work in other cases.

 
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