What to do if the title of the email sent by php is garbled

The solution to the garbled title of the email sent by php: first use the function base64_encode to encode the data; then send the email, so that the title of the Chinese email sent will not be garbled.

Problem description:

When PHPMailer sends emails, the Chinese characters are garbled. Originally, my system had English content. Later, the requirements changed and I needed to add the title in the title. Chinese has been added to the system, but when using Android's built-in email tool to receive it, garbled characters appear, while using QQ mailbox to view it is indeed normal.

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Solution:

First use the function base64_encode() - use MIME base64 to encode the data

Add the encoding type before the title string. For example: =?UTF-8?B?

Add after the title string: ?=

//例如：
$subject = "=?UTF-8?B?".base64_encode($subject)."?=";
//utf-8
//将上面一句添加到代码之中，这样，发送的中文邮件标题就不是乱码了。   
$subject = "=?GB2312?B?".base64_encode($subject)."?="; //gb2312

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