使用PHP将电子邮件解码为UTF-7

Question

我一直在尝试将许多IMAP消息正文转换为更具可读性的内容（UTF-8或同等功能）。 我似乎找不到开箱即用的功能。

这是我要解码的示例：

President Trump signed an executive order Thursday tar= geting North Korea=E2=80=99s trading partners, calling it a =E2=80=9Cpowerful=E2= =80=9D new tool aimed at isolating and de-nuclearizing the regime.


More on thi= s: http://www.foxnews.com= /politics/2017/09/21/trump-signs-executive-order-targeting-north-koreas-tra= ding-partners.html

（在上面的示例中，任何“ =”，应该有一个换行符）

我尝试过的几件事：

iconv("UTF-8", "Windows-1252//TRANSLIT//IGNORE", $data); 
//this resulted in a server error 500

imap_mime_header_decode($data); 
//this outputs an array (just something that I tried; yes, I know that it is only good for headers)

iconv_mime_decode($test, 0, "ISO-8859-1");
//This works for a few messages (plaintext ones) but does not output anything for the example above; for others, it only outputs part of the message body

mb_convert_encoding($test, "UTF8");
//this results in another internal server error!

$data = str_replace("=92", "'", $data);
//I have also tried to manually find and replace an occurrence of a utf-7 (I guess) encoded string

无论如何，有些事情我做的完全错了，但不确定是什么。 大家如何阅读使用IMAP检索的电子邮件的正文？

我还有什么可以尝试的？ 人们必须始终这样做，但是我似乎找不到解决方案...

谢谢你，罗格

Answer 1

您实际上不在这里处理UTF-7编码。 您实际上看到的是quoted-printable 。

php包含一个解码此功能

实际上，我已经有一段时间没有写PHP了，所以请原谅我的样式失败，这是一个解码文本的示例：

<?php
$s = 'President Trump signed an executive order Thursday tar= geting North Korea=E2=80=99s trading partners, calling it a =E2=80=9Cpowerful=E2= =80=9D new tool aimed at isolating and de-nuclearizing the regime.';

// It's unclear why I have to replace out `= `, I have a feeling these
// are actually newlines and copy paste error?
echo quoted_printable_decode(str_replace('= ', '', $s));
?>

运行时会产生：

President Trump signed an executive order Thursday targeting North Korea’s trading partners, calling it a “powerful” new tool aimed at isolating and de-nuclearizing the regime.