PHP - QR Image HTML Email

问题

This is an old post. Please refer to this post for current issue

回答1:

You can't dump the base64 src into the body of the email, you have to treat it like an attachment. Use a content header in place of the src. Here's a snippet of how gmail does it.

Email Content Header

Content-Type: image/png; name="InlineImage.png"
Content-Disposition: inline; filename="InlineImage.png"
Content-Transfer-Encoding: base64
Content-ID: <ii_ikqclluk0_152ed84122ba57fd>
X-Attachment-Id: ii_ikqclluk0_152ed84122ba57fd

--base64 here--

HTML

<img src="cid:ii_ikqclluk0_152ed84122ba57fd">

来源：https://stackoverflow.com/questions/35442997/php-qr-image-html-email