iconv_mime_decode

    (PHP 5, PHP 7, PHP 8)

    iconv_mime_decode — Decodes a MIME header field

    Descrizione

    iconv_mime_decode(string $string, int $mode = 0, ?string $encoding = null): string|false

    Decodes a MIME header field.

    Elenco dei parametri

    string

    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.

    encoding

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

    Valori restituiti

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

    Log delle modifiche

    Versione Descrizione
    8.0.0 encoding is nullable now.

    Esempi

    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");
    ?>

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    User Contributed Notes 3 notes

    up
    3
    Dirk Becker
    12 years ago
    While creating a new webmailer, I had to coop with a lot of mails and only half of them were correct encoded!Often the text is tagged as ISO but in real its UTF :/After trying a lot of solutions and combination a found a way which seems to work for all our mails. Maybe its usefull to someone else too.<?php    function mime_encode($data)    {        $resp = imap_utf8(trim($data));        if(preg_match("/=\?/", $resp))            $resp = iconv_mime_decode($data, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, "ISO-8859-15");        if(json_encode($resp) == 'null')            $resp = utf8_encode($resp);        return $resp;    }?>
    up
    1
    koronci at aol dot com
    12 years ago
    A simple and working solution for latin encoding supports Slovak, Czech, Russian ect. 
<?php iconv("utf-8", "windows-1250", $SomeWeirdText); ?>

specially for those who strugle with imap_mime_header_decode
    up
    1
    dido dot sevilla at gmail dot com
    20 years ago
    In PHP versions that have imap_mime_decode built in, it's possible to emulate the operation of this function:<?phpfunction 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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