PHP 从数组中下载文件

Question

我正在使用我的 PHP 将文件存储在数组中。现在我想从阵列下载文件。当我尝试这个时：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);}它不会从数组中提取文件让我下载文件。这是完整的代码：<?phprequire_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;当我存储它们时，如何从阵列中下载文件？我是否必须先输出它们，或者是否有办法提取然后下载它？我没有将文件存储在服务器上，因为我想使用 id 从电子邮件中下载附件。

Answer 1

代替：

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

和：

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

这是因为Content-Type: application/octet-stream. 使用mime_content_type()找到合适的MIME类型。