好的，我已经看了大约50个关于这个的stackoverflow帖子，我觉得我正在这样做，但是Alas，PHP Mail（）和我的Ubuntu服务器都没有处理\ r \ n，这里是我正在使用的代码：
$mail_body="Here is the Encrypted Link, for the Record for $email_name,\r\n http://fakelink.ca\r\n (If your email Client is not Highlighting this URL as a Link, please just copy and paste the link into your Browser (Internet Explorer, Firefox etc).\r\n Use the following Username and Password to Login:\r\n Username= $email_username\r\n Password= $email_password\r\n Please contact fake.email@us.com if you have any questions.";