一个旧的，但我会继续并回答，因为它出现在我的搜索。
我有一些问题与新的Outlook非常关心它是否会接受我的事件没有奇怪的问题... 和它的很多实际上归结为适当的行尾。我必须确保在VCalendar代码中使用，但在Unix上的PHP中，我必须确保\n用于实际电子邮件中的新行。下面是我使用最新的Outlook工作的一些代码，它使用字符串数组，以便每个部分的行结束是明确的和明显的：
请注意，此代码不会阻止标头注入。 请使用负责任:)
<?php
date_default_timezone_set('America/New_York');
//CONFIGURE HERE
$fromName = "John Doe";
$fromEmail = "[email protected]";
$toName = "Your Name";
$toEmail = isset($_GET['to']) ? $_GET['to'] : '[email protected]';
$start = new DateTime('2017-08-15 15:00');
$end = new DateTime('2017-08-15 16:00');
$summary = "Hello World Event";
//END CONFIGURATION
$uid = "";
$headers = array();
$boundary = "_CAL_" . uniqid("B",true) . "_B_";
$headers[] = "MIME-Version: 1.0";
$headers[] = "Content-Type: multipart/alternative; boundary=\"".$boundary."\"";
$headers[] = "To: \"{$toName}\" <{$toEmail}>";
$headers[] = "From: \"{$fromName}\" <{$fromEmail}>";
$calendarLines = array(
"BEGIN:VCALENDAR",
"METHOD:REQUEST",
"PRODID:-//PHP//MeetingRequest//EN",
"VERSION:2.0",
"BEGIN:VEVENT",
"ORGANIZER;CN={$fromName}:MAILTO:{$fromEmail}",
"ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN={$toName}:MAILTO:{$toEmail}",
"DESCRIPTION:{$summary}",
"SUMMARY:{$summary}",
"DTSTART:".$start->setTimezone(new DateTimeZone('UTC'))->format('Ymd\THis\Z'),
"DTEND:".$end->setTimezone(new DateTimeZone('UTC'))->format('Ymd\THis\Z'),
"UID:{$uid}",
"CLASS:PUBLIC",
"PRIORITY:5",
"DTSTAMP:".gmdate('Ymd\THis\Z'),
"TRANSP:OPAQUE",
"STATUS:CONFIRMED",
"SEQUENCE:0",
"LOCATION:123 Any Street",
"BEGIN:VALARM",
"ACTION:DISPLAY",
"DESCRIPTION:REMINDER",
"TRIGGER;RELATED=START:-PT15M",
"END:VALARM",
"END:VEVENT",
"END:VCALENDAR"
);
$calendarBase64 = base64_encode(implode("\r\n",$calendarLines));
//ensure we don't have lines longer than 70 characters for older computers:
$calendarResult = wordwrap($calendarBase64,68,"\n",true);
$emailLines = array(
"--{$boundary}",
"Content-Type: text/html; charset=\"iso - 8859 - 1\"",
"Content-Transfer-Encoding: quoted-printable",
"",
"<html><body>",
"<h1>Hello World</h1>",
"<p>This is a calendar event test</p>",
"</body></html>",
"",
"--{$boundary}",
"Content-Type: text/calendar; charset=\"utf - 8\"; method=REQUEST",
"Content-Transfer-Encoding: base64",
"",
$calendarResult,
"",
"--{$boundary}--"
);
$emailContent = implode("\n",$emailLines);
$headersResult = implode("\n",$headers);
mail($toEmail, $summary, $emailContent, $headersResult);
echo("<pre>".htmlentities($headersResult)."\n\n".htmlentities($emailContent)."</pre>");
echo("<br /><br />");
echo("<pre>".base64_decode($calendarResult)."</pre>");
请随时上的应用程序/网站，这样做或不工作添加注释。谢谢。
在Outlook中出现什么错误？ –