Question

我想以.eml格式创建包含多个附件的电子邮件文件。生成附件并且附件的内容正确无误。但附件总是以.dat格式出现，文件名称为“ATT00001”，“ATT0002”......等等

目前我正在关注this stackoverflow question中提供的解决方案，我的代码如下

PHP

   foreach($reports as $pdf){
        $attachment = file_get_contents("auto_report_attachments\\Template_Attachment.eml");
        $attachment = str_replace("TEMPLATE_MIME_TYPE", $pdf['type'], $attachment);
        $attachment = str_replace("TEMPLATE_FILE_NAME", $pdf['filename'], $attachment);
        $attachment = str_replace("TEMPLATE_ATTACHMENT_CONTENT", base64_encode($pdf['file']), $attachment);

        $content .= $attachment;
        unset($attachment);
    }

模板附件

--080107000800000609090108
Content-Type: "TEMPLATE_MIME_TYPE"
name="TEMPLATE_FILE_NAME"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="TEMPLATE_FILE_NAME"

TEMPLATE_ATTACHMENT_CONTENT

$content是主要的电子邮件标题和正文，如上面的链接所述。我的.eml文件看起来像;

MIME-Version: 1.0
Date: Tue, 16 Apr 2013 09:03:37 +0100
From: sender@emailhost.com
To: recipient@emailhost.com
Subject: Email subject
Content-Type: multipart/mixed; boundary="080107000800000609090108"

This is a message with multiple parts in MIME format.

--080107000800000609090108
Content-Type: text/html

<p><strong>Project Name: Some Project and the body continues...</p>



--080107000800000609090108
Content-Type: "application/pdf"
name="AM22831 -  - Cover Sheet.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="AM22831 -  - Cover Sheet.pdf"

JVBERi0xLjMKMyAwIG9iago8PC9UeXBlIC9QYWdlCi9QYXJlbnQgMSAwIFIKL1Jlc291cmNlcyAyIDAgUgovQ29udGVudHMgNCAwICiUlRU9GCg==



--080107000800000609090108
Content-Type: "application/pdf"
name="AM22831 -  - Manufacturing Status.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="AM22831 -  - Manufacturing Status.pdf"

cSAxMTMuMzkgMCAwIDMwLjUzIDE0LjE3IDU1MC41OCBjbSAvSTEgRG8gUQpxIDAuMDAwIDAuMDAwIDEuMDAwIHJnIEJUIDEzMC4zOSRU9GCg==

--080107000800000609090108

上述base64内容通过选择使用PDF打开，在文件打开时在PDF Reader文件中提供正确的内容。但文件不是.pdf格式。 .xls，.doc和所有其他文件类型也是如此。所有文件都采用.dat格式，标准命名而非指定名称。

请帮我解决所附file type指定文件名的附件。

注意：示例base64文件中的.eml内容被截断

Answer 1

我找到了自己的答案.. !! Template_Attachment的标题应如下所示

--080107000800000609090108
Content-Type: TEMPLATE_MIME_TYPE;name="TEMPLATE_FILE_NAME"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;filename="TEMPLATE_FILE_NAME"

TEMPLATE_ATTACHMENT_CONTENT

如果080107000800000609090108是这种情况下的边界，并且在所有附件的末尾，则应该有另一个080107000800000609090108来结束电子邮件。

希望有一天这会对某人有所帮助： - ）

PS：所以实际的.eml文件看起来如下所示，它应该做得很好

MIME-Version: 1.0
Date: Tue, 16 Apr 2013 09:03:37 +0100
From: sender@emailhost.com
To: recipient@emailhost.com
Subject: Email subject
Content-Type: multipart/mixed; boundary="080107000800000609090108"

This is a message with multiple parts in MIME format.

--080107000800000609090108
Content-Type: text/html

<p><strong>Project Name: Some Project and the body continues...</p>

--080107000800000609090108
Content-Type: application/pdf;name="AM22831 Cover Sheet.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;filename="AM22831 Cover Sheet.pdf"

JVBERi0xLjMKMyAwIG9iago8PC9UeXBlIC9QYWdlCi9QYXJlbnQgMSAwIFIKL1Jlc291cmNlcyAyIDAgUgovQ29udGVasdsDFDffjMBakdjKJHBzdHlsZT0iY29=

--080107000800000609090108
Content-Type: application/excel;name="AM22831 Manufacturing Status.xls"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;filename="AM22831 Manufacturing Status.xls"

DQoNCjx0YWJsZSBib3JkZXI9IjAiPg0KPHRyPg0KPHRkIGNvbHNwYW49IjMiIHJvd3NwYW49IjIiIGFsaWduPSJjZW50ZXIiPg0KICAgIDxoMSBzdHlsZT0iY29=

附件名称和文件扩展名不适用于电子邮件* .eml

1 个答案: