PHP 8.4.0 RC4 available for testing

    imap_fetchheader

    (PHP 4, PHP 5, PHP 7, PHP 8)

    imap_fetchheader — Returns header for a message

    Descrição

    imap_fetchheader(IMAP\Connection $imap, int $message_num, int $flags = 0): string|false

    This function causes a fetch of the complete, unfiltered » RFC2822 format header of the specified message.

    Parâmetros

    imap

    Uma instância de IMAP\Connection.

    message_num

    The message number

    flags

    The possible flags are:

    • FT_UID - The message_num argument is a UID
    • FT_INTERNAL - The return string is in "internal" format, without any attempt to canonicalize to CRLF newlines
    • FT_PREFETCHTEXT - The RFC822.TEXT should be pre-fetched at the same time. This avoids an extra RTT on an IMAP connection if a full message text is desired (e.g. in a "save to local file" operation)

    Valor Retornado

    Returns the header of the specified message as a text string, ou false em caso de falha.

    Registro de Alterações

    Versão Descrição
    8.1.0 O parâmetro imap agora espera uma instância de IMAP\Connection; anteriormente, um resource imap válido era esperado.

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    Notas Enviadas por Usuários (em inglês) 2 notes

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    7
    rgagnon24 dot nospam at gmail dot com
    14 years ago
    Interesting that imap_headerinfo() does not allow a UID for the $msg_number field like all other fetching functions seem to allow.

    If you want to use a UID to fetch the headers, use this two-step process:

    <?php
    /*
    * assumes $mbox is your stream, and $uid is set
    * properly. Proper error checking is up to you.
    */
    $hText = imap_fetchbody($mbox, $uid, '0', FT_UID);
    $headers = imap_rfc822_parse_headers($hText);
    ?>

    The result is the same as the output of imap_headerinfo(), but you get to use the UID.
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    3
    Jille at nomorecrap dot quis dot cx
    16 years ago
    <?PHP
    $headers    =imap_fetchheader($imap, $msgid);
    preg_match_all('/([^: ]+): (.+?(?:\r\n\s(?:.+?))*)\r\n/m', $headers, $matches);
    ?>

    Works quite well for splitting headers,
    $matches will contain 3 arrays:
    $matches[0] are the full-lines (To: Jille@devnull.quis.cx\r\n)
    $matches[1] will be the header (To)
    $matches[2] will be the value (Jille@devnull.quis.cx)

    In multi-line values the 'multilining is not stripped!'
    this could be achieved with something like:
    <?PHP
    preg_replace    ('/\r\n\s+/m', '', $matches[2]);
    ?>
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