我在 Outlook 正确显示电子邮件内容和附件时遇到问题，电子邮件内容在 Google Mail 或 Hotmail 等邮件服务提供商上运行良好。
这是 Outlook 产生的电子邮件内容：
X-Mailer: simpleEmailClass v1.0
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="13406541204fe8c2284f5aa"
Message-Id: < - removed - >
Date: Mon, 25 Jun 2012 20:55:20 +0100 (BST)
--13406541204fe8c2284f5aa
Content-Type: multipart/alternative; boundary="13406541204fe8c2284f98f"
--13406541204fe8c2284f98f
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: quoted-printable
Dear Rachel
Further to your recent enquiry please accept this email as confirmation of your booking.
Kind Regards
Hanna
--13406541204fe8c2284f98f
Content-Type: text/html; charset="ISO-8859-1"
Content-Transfer-Encoding: quoted-printable
<html>
<body>
<html><body><p>
<span style="font-family: arial, helvetica, sans-serif; font-size: 12px; ">Dear Rachel</span></p>
<p>
<span style="font-size:12px;"><span style="font-family:arial,helvetica,sans-serif;">Further to your recent enquiry please accept this email as confirmation of your booking.</span></span></p>
<p>
<span style="font-size:12px;"><span style="font-family:arial,helvetica,sans-serif;">Kind Regards</span></span></p>
<p>
<font face="arial, helvetica, sans-serif">Hanna</font></p>
</body></html>
</body>
</html>
--13406541204fe8c2284f98f--
--13406541204fe8c2284f5aa
Content-Type: application/pdf; name="invoice.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="invoice.pdf"
JVBERi0xLjMKMSAwIG9iago8PCAvVHlwZSAvQ2F0YWxvZwovT3V0bGluZXMgMiAwIFIKL1Bh
^^ This go on and on for a long time, thought it was best not to post it all.
--13406541204fe8c2284f5aa--
上面的这封电子邮件是在 Outlook 中看到的，在 Google Mail 中，它显示为 HTML 版本。
这是我用于电子邮件类的代码。
<?php
class sec {
var $secVersion = '1.0';
var $to = '';
var $Cc = array ();
var $Bcc = array ();
var $subject = '';
var $message = '';
var $attachment = array ();
var $embed = array ();
var $charset = 'ISO-8859-1';
var $emailboundary = '';
var $emailheader = '';
var $textheader = '';
var $errors = array ();
function __construct($toname, $toemail, $fromname, $fromemail) {
$this->emailboundary = uniqid ( time () );
$this->to = "{$toname} <" . $this->validateEmail ( $toemail ) . ">";
$email = $this->validateEmail ( $fromemail );
$this->emailheader .= "From: {$fromname} <{$email}>\r\n";
}
function validateEmail($email) {
if (! preg_match ( '/^[A-Z0-9._%-]+@(?:[A-Z0-9-]+\\.)+[A-Z]{2,4}$/i', $email ))
die ( 'The Email ' . $email . ' is not Valid.' );
return $email;
}
function Cc($email) {
$this->Cc [] = $this->validateEmail ( $email );
}
function Bcc($email) {
$this->Bcc [] = $this->validateEmail ( $email );
}
function buildHead($type) {
$count = count ( $this->$type );
if ($count > 0) {
$this->emailheader .= "{$type}: ";
$array = $this->$type;
for($i = 0; $i < $count; $i ++) {
if ($i > 0)
$this->emailheader .= ',';
$this->emailheader .= $this->validateEmail ( $array [$i] );
}
$this->emailheader .= "\r\n";
}
}
function buildMimeHead() {
$this->buildHead ( 'Cc' );
$this->buildHead ( 'Bcc' );
$this->emailheader .= "X-Mailer: simpleEmailClass v{$this->secVersion}\r\n";
$this->emailheader .= "MIME-Version: 1.0\r\n";
}
function buildMessage($subject, $message = '') {
$textboundary = uniqid ( time () );
$this->subject = strip_tags ( trim ( $subject ) );
$this->textheader = "Content-Type: multipart/alternative; boundary=\"$textboundary\"\r\n\r\n";
$this->textheader .= "--{$textboundary}\r\n";
$this->textheader .= "Content-Type: text/plain; charset=\"{$this->charset}\"\r\n";
$this->textheader .= "Content-Transfer-Encoding: quoted-printable\r\n\r\n";
$this->textheader .= strip_tags ( $message ) . "\r\n\r\n";
$this->textheader .= "--$textboundary\r\n";
$this->textheader .= "Content-Type: text/html; charset=\"$this->charset\"\r\n";
$this->textheader .= "Content-Transfer-Encoding: quoted-printable\r\n\r\n";
$this->textheader .= "<html>\n<body>\n{$message}\n</body>\n</html>\r\n\r\n";
$this->textheader .= "--{$textboundary}--\r\n\r\n";
}
function mime_type($file) {
return (function_exists ( 'mime_content_type' )) ? mime_content_type ( $file ) : trim ( exec ( 'file -bi ' . escapeshellarg ( $file ) ) );
}
function attachment($file, $filename = NULL, $direct_input = FALSE, $mime = '') {
if(!$direct_input)
{
if (is_file ( $file )) {
$basename = $filename? $filename: basename ( $file );
$attachmentheader = "--{$this->emailboundary}\r\n";
$attachmentheader .= "Content-Type: " . $this->mime_type ( $file ) . "; name=\"{$basename}\"\r\n";
$attachmentheader .= "Content-Transfer-Encoding: base64\r\n";
$attachmentheader .= "Content-Disposition: attachment; filename=\"{$basename}\"\r\n\r\n";
$attachmentheader .= chunk_split ( base64_encode ( fread ( fopen ( $file, "rb" ), filesize ( $file ) ) ), 72 ) . "\r\n";
$this->attachment [] = $attachmentheader;
} else {
die ( 'The File ' . $file . ' does not exsist.' );
}
}
else
{
$basename = $filename;
$attachmentheader = "--{$this->emailboundary}\r\n";
$attachmentheader .= "Content-Type: $mime; name=\"{$basename}\"\r\n";
$attachmentheader .= "Content-Transfer-Encoding: base64\r\n";
$attachmentheader .= "Content-Disposition: attachment; filename=\"{$basename}\"\r\n\r\n";
$attachmentheader .= chunk_split ( base64_encode ( $file ), 72 ) . "\r\n";
$this->attachment [] = $attachmentheader;
}
}
function embed($file) {
if (is_file ( $file )) {
$basename = basename ( $file );
$fileinfo = pathinfo ( $basename );
$contentid = md5 ( uniqid ( time () ) ) . "." . $fileinfo ['extension'];
$embedheader = "--{$this->emailboundary}\r\n";
$embedheader .= "Content-Type: " . $this->mime_type ( $file ) . "; name=\"{$basename}\"\r\n";
$embedheader .= "Content-Transfer-Encoding: base64\r\n";
$embedheader .= "Content-Disposition: inline; filename=\"{$basename}\"\r\n";
$embedheader .= "Content-ID: <{$contentid}>\r\n\r\n";
$embedheader .= chunk_split ( base64_encode ( fread ( fopen ( $file, "rb" ), filesize ( $file ) ) ), 72 ) . "\r\n";
$this->embed [] = $embedheader;
return "<img src=3D\"cid:{$contentid}\">";
} else {
die ( 'The File ' . $file . ' does not exsist.' );
}
}
function sendmail() {
$this->buildMimeHead ();
$header = $this->emailheader;
$attachcount = count ( $this->attachment );
$embedcount = count ( $this->embed );
if ($attachcount > 0 || $embedcount > 0) {
$header .= "Content-Type: multipart/mixed; boundary=\"{$this->emailboundary}\"\r\n\r\n";
$header .= "--{$this->emailboundary}\r\n";
$header .= $this->textheader;
if ($attachcount > 0)
$header .= implode ( "", $this->attachment );
if ($embedcount > 0)
$header .= implode ( "", $this->embed );
$header .= "--{$this->emailboundary}--\r\n\r\n";
} else {
$header .= $this->textheader;
}
return mail ( $this->to, $this->subject, $this->message, $header );
}
}
我该怎么做才能使 Outlook 中的电子邮件仅显示纯文本或 html 和附件，而不是当前显示的方式。
谢谢