PHP从数组下载该文件

我正在使用PHP将文件存储在数组中。现在我想从数组中下载该文件

当我尝试这个：

if($attachments[$attach_id])
{
    $filename = $attachments[$attach_id]['name'];
    $attachment = $attachments[$attach_id]['attachment'];
    header("Content-Type: application/octet-stream");
    header("Content-Transfer-Encoding: Binary");
    header("Content-disposition: attachment; filename=".basename($attachment)); 
    echo readfile($attachment);
}

它不会从阵列中提取文件以让我下载该文件

以下是完整的代码：

<?php

require_once "Mail.php";
require_once('Mail/IMAPv2.php');

$username = 'username';
$password = 'password';
$mailserver = '{imap.domain.com:993/imap/ssl/novalidate-cert}INBOX';
$mailbox = imap_open($mailserver, $username, $password) or die("Can't connect: " . imap_last_error());
$key = "key";
$email_number = "279";
$attach_id = '1';
echo "hello!";

/* get information specific to this email */
$overview = imap_fetch_overview($mailbox, $email_number, 0);

$message = imap_fetchbody($mailbox, $email_number, 2);

/* get mail structure */
$structure = imap_fetchstructure($mailbox, $email_number);
$attachments = array();
$attachment_number = 0;


if(isset($structure->parts) && count($structure->parts)) {

    for($i = 0; $i < count($structure->parts); $i++) {

        if (($structure->parts[$i]->ifdisposition) && ($structure->parts[$i]->disposition == 'attachment')) {

            foreach($structure->parts[$i]->parameters as $object) {
                if(strtolower($object->attribute) == 'name') {
                    $attachments[$attachment_number]['is_attachment'] = true;
                    $attachments[$attachment_number]['name'] = $object->value;
                    //$attachments[$attachment_number]['attachment'] = '';


                    if($attachments[$attachment_number]['is_attachment']) {
                        $attachments[$attachment_number]['attachment'] = imap_fetchbody($mailbox, $email_number, 2);


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

                            $attachments[$attachment_number]['attachment'] = quoted_printable_decode($attachments[$attachment_number]['attachment']);
                        }
                    }
                }
            }
            $attachment_number++;
        }
    }
}


if($attachments[$attach_id])
{
    $filename = $attachments[$attach_id]['name'];
    $attachment = $attachments[$attach_id]['attachment'];
    header("Content-Type: application/octet-stream");
    header("Content-Transfer-Encoding: Binary");
    header("Content-disposition: attachment; filename=".basename($attachment)); 
    echo readfile($attachment);
}

/* close the connection */
imap_close($mailbox);

?>

当我存储文件时，如何从阵列下载文件

我是否必须先输出它们，或者是否有一种方法可以提取并下载它们

我没有将文件存储在服务器上，因为我想使用id从电子邮件下载附件

谢谢。

替换：

header("Content-Type: application/octet-stream");

与：

这是因为内容类型：应用程序/八位字节流。使用mime\u内容\u类型查找正确的mime类型

有关内容类型的详细信息：

---

你有什么错误吗？@andreah没有，我没有任何错误。我已经在php中显示了内容，但我无法下载它。知道怎么下载吗？像这样：Rar！�������v�� �$��rmreport.php�_ږN��ͷ6C33�T�\+C�7o���C����图A4�Hȑ*����/x�[���6.�8.��v�N�R����?x}�=������.���A.�F+'1�Q҇���VG]��x�֚����A.��]FG�v��6.��sX֢�3LiF�是�/�8.� ��A.�P��{���]᰿�T�����{�@{f��.X%͓L���x��我�M&ڙw��9B���锌�-�6.�v�����F��~F���/�N��Jܬ��;���D�[�,R�RlC$�0]����˯G�N�不�K��w}�Y���B$�7z�?����7y����� ���Ʋ.�*��0-��=�,���^3-u%&C�eZ/ֈ� 20���$�去�L吜敖。�rR�~l7Z��{9w-b；���R�?߫����{L:��Y��G�������� 囜�}send_mail.php`我无法测试它，但尝试将headerContent类型更改为：application/octet stream，headerContent类型为：.mime_content_Type$Attachment请告诉我它是否有效，谢谢

 header("Content-Type: ".mime_content_type($attachment));