Zap library

//import Zap

require_once("zap/zapcallib.php");

// Create Zap

$icalobj = new ZCiCal();

// Load all events from database somehow

$events = ...

// Loop through all vents

foreach($events as $event) {

// Create a Zap event object

$eventobj = new ZCiCalNode("VEVENT", $icalobj->curnode);

// Every event needs a unique ID

$uid = $event->id . "@yourdomainname.com";

$eventobj->addNode(new ZCiCalDataNode("UID:" . $uid));

// Add event using current time as timestamp

$eventobj->addNode(new ZCiCalDataNode("DTSTAMP:" . ZCiCal::fromSqlDateTime()));

// in this case we don't have the exact time, so we want to make 'whole day' events that are displayed on top in your calendar.

// You do that by having the event be exactly 24h, from 12:00 to 12:00

$eventobj->addNode(new ZCiCalDataNode("DTSTART;VALUE=DATE:" . date('Ymd', $event->startdate) ));

$start = date('Y-m-d', $event->startdate);

// Add exactly one day

$nextDay = strtotime($start . ' +1 day');

$eventobj->addNode(new ZCiCalDataNode("DTEND;VALUE=DATE:" . date('Ymd', $nextDay) ));

// Construct a link back to your website so you can go straight to the event page

$eventobj->addNode(new ZCiCalDataNode("URL:" . 'https://yourdomainname.com/event/' . $event->parent->name . '/event/' . $event->name));

// Could add an image, would be nice!

$eventobj->addNode(new ZCiCalDataNode("ATTACH;FMTTYPE=image/jpeg:" . $event->image->url));

// A title for the event

$eventobj->addNode(new ZCiCalDataNode("SUMMARY: " . $event->parent->title . ', ' . $event->title));

// And maybe a lead text

$eventobj->addNode(new ZCiCalDataNode("Description:" . ZCiCal::formatContent($event->leadtext)));

}

// Use the right header

header("Content-type:text/calendar");

//...Aaand export!

echo $icalobj->export();