Question

我正在制作一个电子邮件客户端，我有一个功能可以保存服务器上附加到电子邮件的所有文件。文件正在保存在服务器上，但问题是每个文件的大小变为0 kB，每个文件的编码等于3。

我想知道如何根据附件的子类型为imap_fetchbody()选择正确的选项。

这是我的代码：

if($attachments[$i]['is_attachment']){

    $attachments[$i]['attachment'] = imap_fetchbody($imap, $uid, $i + 1;);

    if($structure->parts[$i]->type == 1){
        // 3 = BASE64
        $attachments[$i]['attachment'] = imap_8bit($attachments[$i]['attachment']);
    }

    if($structure->parts[$i]->type == 2){
        // 3 = BASE64
        $attachments[$i]['attachment'] = imap_binary($attachments[$i]['attachment']);
    }

    if($structure->parts[$i]->type == 7){
        // 3 = BASE64
        $attachments[$i]['attachment'] = imap_base64($attachments[$i]['attachment']);
    }

    if($structure->parts[$i]->type == 4){
        // 3 = BASE64
        $attachments[$i]['attachment'] = imap_qprint($attachments[$i]['attachment']);
    }

    if($structure->parts[$i]->type == 3){
        // 3 = BASE64
        $attachments[$i]['attachment'] = base64_decode($attachments[$i]['attachment']);
    }
    elseif($structure->parts[$i]->type == 4){
        // 4 = QUOTED - PRINTABLE
        $attachments[$i]['attachment'] = quoted_printable_decode($attachments[$i]['attachment']);
    }
    //return $message;

}

Answer 1

您应该查看传输编码，而不是类型，因为它可以使用不同的编码对某种文件类型（例如，图像，类型5或TYPEIMAGE）进行编码（例如base64或引号的可打印）。

做这样的事情：

if($structure->parts[$i]->encoding == ENC8BIT){
    $attachments[$i]['attachment'] = imap_8bit($attachments[$i]['attachment']);
}

elseif($structure->parts[$i]->encoding == ENCBINARY){
    $attachments[$i]['attachment'] = imap_binary($attachments[$i]['attachment']);
}

elseif($structure->parts[$i]->encoding == ENCBASE64){
    $attachments[$i]['attachment'] = imap_base64($attachments[$i]['attachment']);
}

elseif($structure->parts[$i]->encoding == ENCQUOTEDPRINTABLE){
    $attachments[$i]['attachment'] = imap_qprint($attachments[$i]['attachment']);
}

imap_fetchbody（）的正确选项;

1 个答案: