Ics.php

Information on this page is Obsolete; it is preserved for historical interest

This code still needs to be cleaned up some.

• Note, this script requires: Drupal.login.php

<?php

include('Drupal.login.php');

$ics_contents = "BEGIN:VCALENDAR\n";
$ics_contents .= "VERSION:2.0\n";
$ics_contents .= "PRODID:PHP\n";
$ics_contents .= "METHOD:PUBLISH\n";
$ics_contents .= "X-WR-CALNAME:HacDC Schedule\n";

# Change the timezone as well daylight settings if need be
$ics_contents .= "X-WR-TIMEZONE:America/New_York\n";
$ics_contents .= "BEGIN:VTIMEZONE\n";
$ics_contents .= "TZID:America/New_York\n";
$ics_contents .= "BEGIN:DAYLIGHT\n";
$ics_contents .= "TZOFFSETFROM:-0500\n";
$ics_contents .= "TZOFFSETTO:-0400\n";
$ics_contents .= "DTSTART:20070311T020000\n";
$ics_contents .= "RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU\n";
$ics_contents .= "TZNAME:EDT\n";
$ics_contents .= "END:DAYLIGHT\n";
$ics_contents .= "BEGIN:STANDARD\n";
$ics_contents .= "TZOFFSETFROM:-0400\n";
$ics_contents .= "TZOFFSETTO:-0500\n";
$ics_contents .= "DTSTART:20071104T020000\n";
$ics_contents .= "RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU\n";
$ics_contents .= "TZNAME:EST\n";
$ics_contents .= "END:STANDARD\n";
$ics_contents .= "END:VTIMEZONE\n";

$events = mysql_query("SELECT
node.nid AS nid,
node.title AS title,
node.changed as node_changed,
node.type AS node_type,
node.vid AS node_vid,
content_field_date.field_date_value as Start,
content_field_date.field_date_value2 as End
FROM (node
left join content_field_date on node.vid = content_field_date.vid)
WHERE type = 'event'
ORDER BY Start
");

function clean_url($desc) {
$desc = html_entity_decode($desc);
$desc = strip_tags($desc);
$desc = ereg_replace("[^A-Za-z0-9 -|=`~!@#$%^&*()_+,./?><:;'{}]", "", $desc );
return $desc;
}

while ($schedule_details = mysql_fetch_assoc($events)) {

if (date('T', strtotime($schedule_details['Start'])) == "EDT") {
$Offset = 4*60*60;
} else {
$Offset = 5*60*60;
}
$Start = strtotime($schedule_details['Start'])-$Offset;
$End = strtotime($schedule_details['End'])-$Offset;


$desc1 = mysql_query("SELECT * from node_revisions
WHERE
nid = '".$schedule_details['nid']."' and
vid = '".$schedule_details['node_vid']."'");

$desc1 = mysql_fetch_assoc($desc1);

$Yr = date(Y,$Start);
$Mo = date(m,$Start);
$Day = date(d,$Start);
$Hr = date(H,$Start);
$Min = date(i,$Start);
$Yr1 = date(Y,$End);
$Mo1 = date(m,$End);
$Day1 = date(d,$End);
$Hr1 = date(H,$End);
$Min1 = date(i,$End);

$id = $schedule_details['nid'];
$start_date = $Yr."-".$Mo."-".$Day;
$start_time = $Hr.":".$Min.":00";
$end_date = $Yr1."-".$Mo1."-".$Day1;
$end_time = $Hr1.":".$Min1.":00";

$category = "HacDC";
$name = $schedule_details['title'];
$location = "1525 Newton St NW, Washington DC 20010 (Near corner of 16th and Newton NW)";
$description = clean_url(strip_tags($desc1['body']));

# Remove '-' in $start_date and $end_date
$estart_date = str_replace("-", "", $start_date);
$eend_date = str_replace("-", "", $end_date);

# Remove ':' in $start_time and $end_time
$estart_time = str_replace(":", "", $start_time);
$eend_time = str_replace(":", "", $end_time);

# Replace some HTML tags
$name = str_replace("<br>", "\\r\\n", $name);
$name = str_replace("&amp;", "&", $name);
$name = str_replace("&rarr;", "-->", $name);
$name = str_replace("&larr;", "<--", $name);
$name = str_replace(",", "\\,", $name);
$name = str_replace(";", "\\;", $name);

$location = str_replace("<br>", "\\r\\n", $location);
$location = str_replace("&amp;", "&", $location);
$location = str_replace("&rarr;", "-->", $location);
$location = str_replace("&larr;", "<--", $location);
$location = str_replace(",", "\\,", $location);
$location = str_replace(";", "\\;", $location);

$description = str_replace("<br>", "\\r\\n", $description);
$description = str_replace("&amp;", "&", $description);
$description = str_replace("&rarr;", "-->", $description);
$description = str_replace("&larr;", "<--", $description);
$description = str_replace("<em>", "", $description);
$description = str_replace("</em>", "", $description);

# Change TZID if need be
$ics_contents .= "BEGIN:VEVENT\r\n";
$ics_contents .= "DTSTART;TZID=America/New_York:" . $estart_date . "T". $estart_time . "\r\n";
$ics_contents .= "DTEND;TZID=America/New_York:" . $eend_date . "T". $eend_time . "\r\n";
$ics_contents .= "DTSTAMP:" . date('Ymd') . "T". date('His') . "Z\r\n";
$ics_contents .= "SUMMARY:" . $name . "\r\n";
$ics_contents .= "LOCATION:" . $location . "\r\n";
$ics_contents .= "DESCRIPTION:" . $description . "\r\n";
$ics_contents .= "UID:" . $id .rand(0,9999). "\r\n";
$ics_contents .= "SEQUENCE:0\r\n";
$ics_contents .= "END:VEVENT\r\n";
}
$ics_contents .= "END:VCALENDAR\r\n";

echo $ics_contents;