Decodes multiple MIME header fields at once (PHP 5)
array iconv_mime_decode_headers ( string encoded_headers [, int mode [, string charset]] )

Returns an associative array that holds a whole set of MIME header fields specified by encoded_headers on success, or FALSE if an error occurs during the decoding.

Each key of the return value represents an individual field name and the corresponding element represents a field value. If more than one field of the same name are present, iconv_mime_decode_headers() automatically incorporates them into a numerically indexed array in the order of occurrence.

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

表 107. Bitmasks acceptable to iconv_mime_decode_headers()

1ICONV_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.
2ICONV_MIME_DECODE_CONTINUE_ON_ERROR If set, iconv_mime_decode_headers() attempts to ignore any grammatical errors and continue to process a given header.

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

例 794. iconv_mime_decode_headers() example

= <<<EOF
Subject: =?UTF-8?B?UHLDvGZ1bmcgUHLDvGZ1bmc=?=
To: example@example.com
Date: Thu, 1 Jan 1970 00:00:00 +0000
Message-Id: <example@example.com>
Received: from localhost (localhost
[]) by localhost
   with SMTP id example for <example@example.com>
   Thu, 1 Jan 1970 00:00:00 +0000 (UTC)
   (envelope-from example-return-0000-example=example.com@example.com)
Received: (qmail 0 invoked by uid 65534); 1 Thu 2003 00:00:00 +0000


$headers =  iconv_mime_decode_headers($headers_string, 0, "ISO-8859-1");


   [Subject] => Prüfung Prüfung
   [To] => example@example.com
   [Date] => Thu, 1 Jan 1970 00:00:00 +0000
   [Message-Id] => <example@example.com>
   [Received] => Array
           [0] => from localhost (localhost []) by localhost with SMTP id example for <example@example.com>; Thu, 1 Jan 1970 00:00:00 +0000 (UTC) (envelope-from example-return-0000-example=example.com@example.com)
           [1] => (qmail 0 invoked by uid 65534); 1 Thu 2003 00:00:00 +0000


See also iconv_mime_decode(), mb_decode_mimeheader(), imap_mime_header_decode(), imap_base64() and imap_qprint().