使用wp_mail显示内嵌图像附件 [英] Display inline image attachments with wp_mail

问题描述

我有问题.

我想将图像附加到电子邮件中，并与其他一些php生成的内容一起内联显示.问题是我没有丝毫想法如何使用内联wp_mail用于附加的文件附件数组.

I would like to attach an image to an email and also display it inline, with some other php-generated content. The problem is I don't have the slightest ideea how to use inline a file attachment array used by wp_mail to attach.

我的解决方案是在base64中对图像进行编码，然后将它们放入HTML内联中，如下所示:

My solution was to encode the images in base64 and put them inline the HTML like this:

<img alt="The Alt" src="data:image/png;base64,*etc*etc*etc" />

但是问题是Gmail/Outlook从图像中删除了src数据.所以它降落为

But the problem is that Gmail / Outlook remove the src data from the image. So it lands as

<img alt="The Alt" />

是否有任何线索可以修改(标题可以与base64一起使用)或如何使用附件将它们嵌入到行内?

Any clues what to modify (headers to work with base64) or how to use attachment to embed them inline?

推荐答案

wp_mail 使用 PHPMailer 类.此类具有内联附件所需的所有功能.要在wp_mail()发送电子邮件之前更改phpmailer对象，可以使用过滤器 phpmailer_init .

wp_mail uses the PHPMailer class. This class has all the functionality needed for inline attachments. To change the phpmailer object before wp_mail() sends the email you could use the filter phpmailer_init.

$body = '
Hello John,
checkout my new cool picture.
<img src="cid:my-cool-picture-uid" width="300" height="400">

Thanks, hope you like it ;)';

这是如何在电子邮件正文中插入图片的示例.

That was an example of how to insert the picture in you email body.

$file = '/path/to/file.jpg'; //phpmailer will load this file
$uid = 'my-cool-picture-uid'; //will map it to this UID
$name = 'file.jpg'; //this will be the file name for the attachment

global $phpmailer;
add_action( 'phpmailer_init', function(&$phpmailer)use($file,$uid,$name){
    $phpmailer->SMTPKeepAlive = true;
    $phpmailer->AddEmbeddedImage($file, $uid, $name);
});

//now just call wp_mail()
wp_mail('[e-mail]','Hi John',$body);

仅此而已.

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