sending calendar request through mail

问题:

I am trying to implement the calendar request mail through my php code. My code is like :

$to = "[e-mail]";
$subject = "Training Registration";
$message = "Thank you for participating in the Technical Certification training program.";
$location = "Conf";
//==================
$headers = "Content-Type:text/calendar; Content-Disposition: inline; charset=utf-8;";
$headers .= "Content-Type: text/plain;charset=utf-8";
$messaje = "BEGIN:VCALENDAR";
$messaje .= "VERSION:2.0";
$messaje .= "PRODID:PHP";
$messaje .= "METHOD:REQUEST";
$messaje .= "BEGIN:VEVENT";
$messaje .= "DTSTART:20121223T171010Z";
$messaje .= "DTEND:20121223T191010Z";
$messaje . "DESCRIPTION: You have registered for the class";
$messaje .= "SUMMARY:Technical Training";
$messaje .= "ORGANIZER; CN=\"Corporate\":mailto:[e-mail]";
$messaje .= "Location:" . $location . "";
$messaje .= "UID:040000008200E00074C5B7101A82E00800000006FC30E6 C39DC004CA782E0C002E01A81\n";
$messaje .= "SEQUENCE:0\n";
$messaje .= "DTSTAMP:".date('Ymd').'T'.date('His')."\n";
$messaje .= "END:VEVENT\n";
$messaje .= "END:VCALENDAR\n";
$headers .= $messaje;
mail($to, $subject, $message, $headers);

By this code I got mail but not in terms of calendar request format. Also mail has been forwarded along with an attachment "Training Registration.ics" file. I need the Accept, Tentative, Decline, Propose New Time, Calendar option along with the mail. Please guide me how to do that. Thanks.

回答1:

$headers = 'Content-Type:text/calendar; Content-Disposition: inline; charset=utf-8;\r\n';

Here, try to change single quote to double quote('=>")

It is because dingle quote will escape \r and \n
Reference

Update
Finally, I do the suggestion in below and change your header and, at least, it work on my side.

$to = "[e-mail]";
$subject = "Training Registration";
$message = "Thank you for participating in the Technical Certification training program.\r\n\r\n";
$location = "Conf";
//==================
$headers .= "MIME-version: 1.0\r\n";
$headers .= "Content-class: urn:content-classes:calendarmessage\r\n";
$headers .= "Content-type: text/calendar; method=REQUEST; charset=UTF-8\r\n";
$messaje = "BEGIN:VCALENDAR\r\n";
$messaje .= "VERSION:2.0\r\n";
$messaje .= "PRODID:PHP\r\n";
$messaje .= "METHOD:REQUEST\r\n";
$messaje .= "BEGIN:VEVENT\r\n";
$messaje .= "DTSTART:20121223T171010Z\r\n";
$messaje .= "DTEND:20121223T191010Z\r\n";
$messaje .= "DESCRIPTION: You have registered for the class\r\n";
$messaje .= "SUMMARY:Technical Training\r\n";
$messaje .= "ORGANIZER; CN=\"Corporate\":mailto:[e-mail]\r\n";
$messaje .= "Location:" . $location . "\r\n";
$messaje .= "UID:040000008200E00074C5B7101A82E00800000006FC30E6 C39DC004CA782E0C002E01A81\r\n";
$messaje .= "SEQUENCE:0\r\n";
$messaje .= "DTSTAMP:".date('Ymd').'T'.date('His')."\r\n";
$messaje .= "END:VEVENT\r\n";
$messaje .= "END:VCALENDAR\r\n";
$message .= $messaje;
mail($to, $subject, $message, $headers);