How to turn this into a plain text email?
$bound_text=md5(uniqid(time()));
$headers.="MIME-Version: 1.0\r\n" . "Content-Type: multipart/mixed; boundary=\"PHP-mixed-$bound_text\"\r\n";
$message="--PHP-mixed-$bound_text\r\n"
."Content-Type: text/html; charset=\"utf-8\"\r\n"
."Content-Transfer-Encoding: 7bit\r\n\r\n"
."<html><head></head><body>"
."<div style=\"font-family: Arial, Helvetica, sans-serif; font-size : 1.3em; color: #000000;width: 100%;text-align: left;\">$text_message</div></body></html>\r\n\r\n"
."--PHP-mixed-$bound_text\r\n"
."Content-Transfer-Encoding: base64\r\n"
."Content-Disposition: attachment; filename=\"$attachment\"\r\n"
."Content-Type: image/jpeg; name=\"$attachment\"\r\n\r\n"
.chunk_split($file)
."\r\n\r\n"
."--PHP-mixed-$bound_text--\r\n\r\n";
}
Is it just removing the HTML part and changing text/html into text/plain?
Removing the HTML should do the trick but you'll probably want to change the content-type to text/plain as well:
."Content-Type: text/plain; charset=\"utf-8\"\r\n"
(I would have let a comment suffice but I can't post comments yet :))
来源：https://stackoverflow.com/questions/9095152/php-plain-text-email