Ics.php

This code still needs to be cleaned up some.

This page needs to be cleaned up since web browsers treat some of the symbols on here as special characters, to see the code correctly for now, click edit this page and read between the and codes.

<?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;